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Table of Contents
Where is the coolant temperature sensor located on a Cummins ISX?
The location of the coolant temperature sensor is on top of the thermostat housing and behind the outlet hose.
Where is the temp control sensor located?
In most cars, the primary ECT sensor (ECT sensor 1) is installed near the thermostat in the cylinder head or block or on the thermostat housing. A second coolant temperature sensor could be installed in another part of the engine, or in the radiator.
How hot should a Cummins ISX run?
Truck runs 210 under load. On a warm day it will over-heat. (alarms) Truck shop says it’s normal to run 220 on the newer trucks.
What’s the 2006 Dodge cummins coolant temp sensor location?
Posted on 08/24/2016 21:06 (#5488335)
Re: ISX Cummins Heater
EC North Dakota Truck runs 210 under load. On a warm day it will overheat. (Alert) Truck Shop says it’s normal to run 220’s on the newer trucks. This is a 05
Am I constantly trying to blow out the radiator? washing out? Or remove the radiator and have it cleaned?
What is normal operating temperature for a diesel engine?
Generally, the operating temperature of an engine should be between 190-220 degrees. Temperatures more than 190 – 220 degrees will put stress on the cylinder head, cylinder liners and engine block. The stress from overheating causes these parts to expand beyond the engine’s tolerances.
What’s the 2006 Dodge cummins coolant temp sensor location?
When an engine overheats, it can lead to head gasket damage and cracked cylinder heads. In general, the operating temperature of an engine should be between 190 and 220 degrees. Temperatures above 190 – 220 degrees stress the cylinder head, cylinder liners and engine block. The stress of overheating causes these parts to expand beyond the engine’s tolerances. This will result in a blown head gasket and/or a warped or cracked cylinder head.
WATCH: Why do diesel engines overheat?
When a diesel engine overheats and these failures occur, it is costly; The repairs and downtime can easily run into the tens of thousands of dollars, so it’s important to understand why overheating occurs and what to do about it.
Common causes of overheating
Even with the most stringent preventive maintenance schedule, engines still overheat, causing thousands of damages and frustration for the repair technician. There are three common causes of a diesel engine overheating:
Low coolant level or loss of coolant
The coolant level should always be maintained at the manufacturer’s recommendation. Even if a technician makes sure the coolant level is where it should be, the harsh environment can cause damage. Continued coolant loss may indicate external leaks at hoses, gaskets, radiator, water pump, thermostat, heater or freeze plug. A cracked cylinder head will also cause coolant loss and is sometimes indicated by white puffy smoke coming out of the exhaust.
Air pockets in the cooling system
Occasionally, coolant will be drained from the engine to make repairs or as part of the general maintenance of your engine. Air pockets can form when topping up coolant. If the trapped air is not purged from the cooling system before starting, the trapped air will cause the engine to overheat. When topping up the cooling system, the manufacturer’s procedures are essential. Many vehicles have vent holes or valves that you can use to remove the air pockets. Avoiding air pockets helps the diesel engine avoid damage and stay on the road.
Faulty thermostat
If the thermostat does not open and close at the correct temperature, the engine will overheat. The radiator, water pump, and clutch fan should be maintained to manufacturer specifications to prevent overheating. Contact your AFA Industries representative for engine replacement parts.
Methods of bleeding the cooling system
There are two other methods to bleed your cooling system. Some vehicles have bleeder valves located on top or in front of the radiator specifically for this problem. Open the valve and release the air trapped in the upper part of the radiator. You can also jack up your vehicle from the front to bleed the cooling system. This puts your radiator higher than the rest of the cooling system and helps seal the air pockets. Leave the radiator cap loose to allow air to escape during this process. The above recommendations are general guidelines and are not intended to supersede the OE manufacturer’s specific instructions for servicing or repairing their respective cooling systems.
How AFA Industries can help
Diesel repair technicians know that a strong preventative maintenance schedule can keep the engine running smoothly. However, if a harsh environment causes damage, overheating may occur through no fault of the technician. When this happens, AFA Industries is here to help.
AFA Industries has a full line of engine parts for a wide variety of Caterpillar®, Cummins®, Detroit Diesel® and Navistar® engines to rebuild almost anything on the engine. Also available are cylinder components, valve train parts, water and oil pumps, cooling system components, fuel system components and other engine parts to help you repair most components for these manufacturers’ engines. Consult the OE manufacturer’s service manual for your engine’s service requirements.
If you enjoyed this article, subscribe to our email list to not miss any of the diesel engine technical information we share regularly and keep up to date with the latest news from AFA Industries.
What is a coolant level sensor?
A coolant level sensor is used to detect the presence or absence of critical coolant fluid inside a coolant system. The use of coolant level sensors enables equipment uptime, ensures the proper operation, and extends the equipment service lifespan.
What’s the 2006 Dodge cummins coolant temp sensor location?
The CAP-300 can be used from 100% water to 100% coolant or any mixture of coolant and water.
Do density, opacity and viscosity variations, as well as dirt and chemical build-up in common coolants, affect the sensor’s ability to detect the presence or absence of the media?
This is unlikely to affect the sensor.
If the composition of the coolant changes over time, does the CAP-300 need to be recalibrated?
If the coolant is changed, no recalibration is required, the sensor continues to work.
What are the symptoms of a faulty temperature sensor?
- Check Engine Light.
- Engine Overheating.
- Poor Fuel Economy.
- Poor Engine Performance.
- Broken Water Pump.
- Control of Cooling Fan.
- Black Smoke From Exhaust Pipe.
What’s the 2006 Dodge cummins coolant temp sensor location?
Only those who keep an eye on the symptoms can get to the bottom of the problem.
The extent of the symptoms also differs between different sensors. For example, most sensors will cause engine overheating when they go bad. However, the coolant temperature sensor causes most of the problems with an overheated engine.
As the coolant temperature sensor is primarily responsible for keeping the engine temperature under control. At the same time, MAP or fuel rail pressure sensors have different primary functions.
The following are the most common symptoms of a bad coolant temperature sensor:
Check engine light Engine overheating Poor fuel economy Poor engine performance Defective water pump Cooling fan control Black smoke from exhaust pipe
This article explains in detail the signs of a bad engine coolant temperature sensor.
What is a coolant temperature sensor?
An engine coolant temperature sensor is also known as a CTS or ECT sensor, as its name suggests that it measures the temperature of the engine coolant. In addition to this function, it also measures the overall engine temperature.
Total engine temperature is measured by estimating the amount of heat the engine gives off when it is running.
It is very important to control the coolant temperature. The coolant is the soul of a car’s cooling system. If the coolant gets too hot, it can cause many problems for your engine.
Refrigerant turns into vapor when it starts to boil. Instead of liquid coolant, this vapor becomes the working medium of your cooling system. This will affect his work.
How does a coolant temperature sensor work?
An engine coolant temperature sensor consists of resistors. When the engine starts running, the engine control unit sends a voltage signal to the coolant temperature sensor.
The resistance of the coolant temperature sensor is calibrated using readings on a temperature scale. This is how the coolant temperature is measured.
The temperature of the coolant also provides an estimate of the amount of heat generated in the engine.
This engine temperature is shown on the temperature gauge on your dashboard.
Symptoms of a bad coolant temperature sensor
The following are the main symptoms of a bad coolant temperature sensor:
Check engine light Engine overheating Poor fuel economy Poor engine performance Defective water pump Cooling fan control Black smoke from exhaust pipe
Let’s take a closer look at the symptoms of bad coolant temperature sensors.
1. Check engine light
When something goes wrong with your car’s electrical system, the check engine light is the first thing that appears on your dashboard.
Personally, I’m not a big fan of Check Engine Light because it tells you there’s a problem. But it never tells you what the problem is. To do this, you need to keep an eye on other signs as well.
Even in the event of a faulty coolant temperature sensor, a check engine light will illuminate on your dashboard. But what the real problem is, you have to find out for yourself.
2. Engine overheating
Any problem with your car’s cooling system will cause the engine to overheat. As the main function of the cooling system is to keep the engine temperature under control.
If a critical component such as the coolant temperature sensor fails, the engine will overheat.
The engine coolant temperature sensor transmits the coolant temperature to the ECU. Incorrect communication can cause the motor to overheat.
3. Poor fuel economy
Based on the input from the coolant temperature sensor, the ECU decides on the fuel injection and the fuel mixture ratio. In the event of a defective sensor, the fuel consumption of a car can increase many times over.
How does this work? If you have a faulty coolant temperature sensor, chances are it will read a coolant temperature that is lower than the actual coolant temperature at that point.
In this case, the ECU decides to inject more fuel to quickly warm up the engine. Since more fuel would generate more heat, the engine temperature will reach the optimal level sooner.
This consumes more fuel than usual. A defective coolant temperature sensor increases fuel consumption.
4. Poor engine performance
A bad engine coolant temperature sensor can also cause the poor performance of your vehicle.
A faulty engine coolant temperature sensor can send an erroneous low coolant temperature signal. It can also send the wrong signal of a high coolant temperature when it isn’t.
So when the ECU receives the signal from the coolant temperature sensor that the coolant temperature is high, it assumes that the engine is overheating.
This case reduces the fuel injection ratio to immediately cool down the engine. Since less fuel causes the engine to run leaner, this helps the engine achieve optimal performance.
But engine power settings are messed up and your vehicle’s engine feels powerless when accelerating.
5. Broken water pump
A faulty engine coolant temperature sensor can also lead to a faulty water pump. If your water pump fails before reaching its expected lifespan, it is a sign that something is wrong with the coolant sensor.
It happens when the faulty coolant temperature sensor shows a higher coolant temperature than the actual one. In this case, the engine control unit takes remedial action.
Not only does it increase fuel injection, but it also increases the RPM of the water pump so it pumps more and more coolant to cool the engine down at the earliest.
This puts unnecessary strain on the water pump, which can cause it to break down much earlier than it actually has.
6. Fan control
Although the coolant temperature sensor is not directly responsible for controlling the radiator fan, its input decides when to turn it on and off.
If the coolant temperature sensor is not working, it may report a lower or higher coolant temperature than actual.
Based on this erroneous reading, your car’s ECU adjusts the speed and switching patterns of the cooling fan.
So if you find that the fan is on when it is not needed and off when you need it most, the coolant temperature sensor is defective.
7. Black smoke from the exhaust pipe
A faulty coolant temperature sensor can disrupt your engine’s fuel mixture ratio.
An optimal amount of fuel is required for the complete combustion process. If proper fuel supply is not maintained, the combustion process will remain incomplete.
A faulty coolant temperature sensor signal can result in either under or over fuel levels.
In the latter case, excess fuel remains unburned and remains in the combustion chamber. This unburned fuel ends up in your car’s exhaust. It will cause black smoke to come out of your car’s muffler. Fuel droplets can also get into the exhaust.
Either way, you need to be concerned about the condition of your coolant temperature sensor.
How do I replace a faulty coolant temperature sensor?
By following the procedure below, you can easily replace the defective ECT sensor yourself:
Prepare the work area:
Stop the engine at least 1 hour before starting work.
Park your car on a level surface.
Open the hood of your vehicle.
Remove the pressure cap and the overflow bottle cap.
Drain old coolant:
Underneath your car is the cooling system drain plug.
Unplug the power cord to drain all coolant.
Store the coolant in a secure container.
Now replace the drain plug or put the old one back in. So you don’t forget it later.
Locate and remove the ECT sensor:
Locate the ECT sensor. It is located on the front of the engine, near the thermostat housing or radiator.
Disconnect the connecting cable between the ECU and the ECT sensor safely.
An ECT sensor attaches like a spark plug.
You need to open it with the help of a socket and remove it completely from the engine block.
Install new CTS and reattach cables:
Clean dirt and debris from the ECT sensor hole.
Then insert the new sensor.
Tighten the new sensor.
Reattach the cable coming from the ECU.
Add coolant:
Check again that the drain plug is tight.
Now top up the coolant up to the marked mark.
Start vehicle:
Give the coolant some time to settle. Then start the engine.
Wait until it gets a little warmer.
Check for coolant leaks from the coolant system.
Make sure the check engine light and other warning signs on the dashboard have gone out.
Engine coolant temperature sensor replacement cost
The total cost to replace a faulty coolant temperature sensor is between $150 and $200. The price varies depending on the workshop you visit, the skill of the mechanic and the country you live in.
The sensor itself is not very expensive. You can get a coolant temperature sensor for $60-$90 at any auto store. But the work will cost you about $100.
You can try to replace the faulty coolant temperature sensor yourself. It will save you the labor cost.
The process is not that complex. You must be careful when resetting the cooling system.
Conclusion
The engine coolant temperature sensor is probably one of the most critical sensors in your car. A malfunction directly affects the fuel efficiency, fuel mixture ratio and consequently the performance of your vehicle.
Black smoke may come out of the muffler due to changes in the engine fuel mixture ratio. This is due to unburned fuel during the combustion process.
If you see a check engine light and your engine is overheating more than usual, it is a clear sign that something is wrong with your vehicle’s cooling system.
A defective coolant temperature sensor puts a strain on other cooling system components. This can also make them bad. At the top of the list is the water pump.
It would be best to keep an eye on the signs of a bad coolant temperature sensor. Once you determine that it has gone bad, you must immediately take it to the mechanic and have it replaced.
frequently asked Questions
What is the average lifespan of a coolant temperature sensor?
All sensors are designed to last the life of your vehicle. But usually this is not the case. A coolant temperature sensor can go bad at about 60,000 miles.
Faulty components of the electrical system can lead to its premature failure. Or it can simply fail due to unfavorable external factors.
What parameters are controlled by the coolant temperature sensors?
The coolant temperature sensor controls many critical engine parameters. These parameters include fuel economy, air/fuel mixture ratio, fuel injection, spark, and ignition timing.
How long can you drive with a faulty coolant temperature sensor?
You can drive 1,000 to 2,000 miles with a bad coolant temperature sensor. By default, when the coolant temperature sensor is faulty, the engine management system sensor sets the coolant temperature to a static value.
This default setting helps keep coolant temperature under control. However, this feature is only available in modern cars. You don’t have that luxury with old cars. So if the symptoms are severe I would recommend not even driving a single kilometer.
Can a faulty coolant temperature sensor put your vehicle’s engine into limp mode?
No, a faulty coolant temperature sensor is unlikely to put your car into limp mode. When the coolant sensor goes bad, the engine management sensor sets the coolant temperature to a static value.
Therefore, the function of the car remains normal. The ECU will not put your car into limp home mode.
Where is a coolant temperature sensor located?
The coolant temperature sensor is located in the front well of your engine. It is located near the thermostat housing or radiator. The coolant temperature sensors are tiny. So you may have to look closely to find it.
What happens when the coolant temperature sensor goes out?
The coolant temperature sensor can fail and transmit cold signals to the computer. This action confuses the computer and stimulates it to enrich the fuel mixture unnecessarily. This can cause the fuel mixture to be vibrant such that during combustion, the fuel can’t be adequately consumed within the chamber.
What’s the 2006 Dodge cummins coolant temp sensor location?
The coolant temperature switch – also known as the coolant temperature sensor – is primarily responsible for monitoring the engine coolant temperature. This engine management system sensor uses electrical resistance to accurately measure the temperature of the coolant.
The generated signal is automatically transmitted to the computer so that necessary changes can be made. This includes changing engine controls as well as fuel calculations for premium performance. Most car engines require more fuel when cold but less when fully warmed up.
If the computer determines that the engine temperature is too high, it will automatically reduce the engine power settings. This is done to prevent overheating which can severely damage the engine.
As you can see, temperature plays such a crucial role in calculating your motor’s performance. And this implies that a malfunction of the coolant temperature sensor can very quickly lead to engine performance problems.
This post discusses some of the most common symptoms of a bad coolant temperature sensor. These symptoms should alert you to possible problems with your car and prompt you to have it thoroughly checked.
Symptoms of a bad coolant temperature sensor
Engine overheating
If you find your engine overheating, the coolant temperature sensor could be the problem. Sometimes the coolant temperature switch can fail so that it starts sending out consistently hot signals.
This causes the computer to incorrectly equalize the signal, causing the engine to misfire or overheat.
Bad fuel consumption
Poor fuel economy is another symptom that indicates your coolant temperature sensor is not working properly.
If the coolant temperature sensor is not working, it can send an incorrect signal to the computer. And the computer’s reaction can throw timing and fuel calculations out of whack.
It’s also common for a coolant temperature sensor to fail without warning, continuously sending cold signals to the computer. The computer incorrectly assumes the engine is cold when it is not.
This causes the automobile to consume more fuel than is necessary, thereby reducing fuel economy. And this will ultimately affect engine performance.
‘Check Engine Lights turns on
If the “Check Engine” light comes on suddenly, it could indicate a problem with the coolant temperature sensor. When the computer detects an unsavory development in the sensor’s circuit or signal, it can trigger the “Check Engine” light. And the light does not go out until a specialist willingly deals with the problem.
Black smoke from the engine
Few drivers barely notice this crucial coolant temperature sensor symptom. But if your vehicle’s exhaust is emitting black smoke, the coolant temperature sensor could be the culprit.
The coolant temperature sensor can fail, transmitting cold signals to the computer. This action confuses the computer and encourages it to enrich the fuel mixture unnecessarily. This can cause the fuel mixture to vibrate, preventing the fuel from being consumed sufficiently in the chamber during combustion.
This will burn your vehicle’s tailpipe, producing black smoke. This can be so serious that driving the vehicle in such a condition may result in environmental or excessive air pollution.
Bad idle
A defective sensor can cause the fuel mixture to adjust. This will cause the engine to shake or vibrate when the vehicle is running at low speed and may even result in strange behavior, loss of power, etc.
Engines are very sensitive, especially to improper air/fuel mixtures at idle. This is an indication that something is wrong with your coolant temperature sensor and needs to be checked by a certified professional.
Defective electric fans
The coolant temperature sensors on some vehicles control the electric cooling fans. Most cars are equipped with two different temperature sensors for fan, engine management and dashboard gauge.
However, if your vehicle only has a single coolant temperature sensor and it becomes defective, your electric fans may not work at all.
Where is the coolant temperature sensor located?
Different car manufacturers and brands have different ways of installing the coolant temperature sensor. Its exact location also depends on its overall design.
However, the coolant temperature sensor is often located directly on the cylinder head or engine block. You’ll find it conveniently attached to a plastic hose at the inlet of the coolant.
Some cars are equipped with more than one coolant temperature sensor. This is because these various switches can sometimes be used to send signals to the cooling fan controls, dashboard and engine system control unit.
If your vehicle is equipped with two sensors, the one that sends signals to the ECU is often referred to as the coolant temperature sensor.
Diagnosing a faulty coolant temperature sensor
Diagnosis should be the job of a certified technician. However, that shouldn’t stop you from examining the engine component if you suspect it’s not working properly.
You may need to get a repair manual for your vehicle’s model. Here’s how to find the readings a working coolant temperature switch should have.
Check your vehicle’s service manual to find your coolant temperature sensor. If you see it, unplug the connectors.
If your sensor has two pins, determine the ohm measurement between the pins. Then compare the value with the correct ohm value – at a certain temperature – in your repair manual. If the value does not match, you will need to replace the coolant temperature sensor.
If the readings add up or are correct, you should check the connections and wiring between the sensor and the engine’s control module.
You can also use an OBD2 scanner to check for related trouble codes. Check the live data to see the temperature of the sensor. If the temperature is out of range, check the wiring to the sensor or replace the engine component.
Conclusion
The coolant temperature switch remains one of the most important engine management sensors. Because it plays a crucial role in numerous calculations that ultimately affect the performance of your engine.
That is why you should not waste any time if you suspect that the coolant temperature sensor is defective. Have your vehicle checked by a professional or experienced technician as soon as possible.
The technician should be able to analyze or diagnose your car and determine whether or not a coolant temperature sensor replacement is necessary.
What does engine code P0128 mean?
What Are Some Causes of a P0128 Code? Error code P0128 indicates that your engine coolant temperature is below the thermostat regulating temperature. This means that your Engine Control Module (ECM) or Powertrain Control Module (PCM) has recognized that your engine is running cooler than it’s supposed to.
What’s the 2006 Dodge cummins coolant temp sensor location?
To check the coolant temperature sensor, a mechanic will either use a scan tool or simply check the car’s temperature gauge. Most vehicles have two separate sensors to monitor coolant temperature. One of these sensors is used to inform the ECM of the coolant temperature. The second sensor is used as an indicator or warning light on the dashboard to warn the driver of an overheating condition. Manufacturers like Volkswagen actually display a blue coolant light on the dashboard to indicate that the coolant is below the regulation temperature.
A vehicle thermometer should read 200°F if the coolant system is working properly. If the scan tool does not match the thermometer reading, there is most likely a problem with your coolant temperature sensor. When this happens, your sensor’s connectors are often damaged or deteriorated, resulting in a bad connection. If the connections are OK, this indicates that the sensor is faulty.
These methods are very technical and often require the expertise of experienced and qualified mechanics to make an adequate diagnosis. For the best result, it is advisable to have your car checked by a professional mechanic to determine the cause of the trouble code and make the necessary repairs.
Does ambient air temperature sensor affect AC?
Inconsistent cooling
Another symptom of a bad or failing ambient temperature sensor is inconsistent cooling. As the ambient temperature sensor plays a direct role in the automated function of the AC system, when it is having a problem this may interfere with the system’s ability to cool the vehicle.
What’s the 2006 Dodge cummins coolant temp sensor location?
Vehicles in hot or cold extremes require significantly more effort from the HVAC system to both cool and heat the vehicle interior. For this reason it is important for the system to know the temperature of the environment in which the vehicle is located. It’s the job of the ambient temperature sensor to measure the outside temperature of the vehicle as a reference point for the computer to make calculations. The computer continuously monitors the ambient temperature sensor signal and makes automatic adjustments as needed to maintain cabin temperature. When the ambient temperature sensor fails, there are usually a few symptoms that can alert the driver that there is a problem with the sensor and it should be checked or replaced if necessary.
1. AC Auto mode does not work
Most modern vehicles have an automatic air conditioning setting that allows the vehicle to set and regulate the temperature automatically. The AC system simply reads data from the ambient and cabin temperature sensors and continuously turns the AC system on and off as needed to keep the cabin cool. If the ambient temperature sensor fails, the system has no reference point to base its automatic calculations on and the adjustment will not work.
2. Inconsistent cooling
Another symptom of a bad or faulty ambient temperature sensor is inconsistent cooling. Because the ambient temperature sensor plays a direct role in the automated functioning of the climate control system, if there is a problem it could affect the system’s ability to cool the vehicle. If the ambient temperature sensor fails or emits an inconsistent signal, the air conditioning system may have trouble maintaining cool and comfortable cabin temperatures.
3. Wrong reading on the temperature gauge
Another more obvious symptom of a bad or faulty sensor is an incorrect reading on the vehicle’s temperature gauge. Most vehicles have some sort of gauge somewhere inside the vehicle that shows the outside temperature of the vehicle, which is usually read by the ambient temperature sensor. If the reading on the meter or display is off by more than a few degrees, the sensor should be replaced as the incorrect reading can affect the proper functioning of the AC system.
The ambient temperature sensor plays an important role in the overall operation of the AC system. For this reason, if you suspect that your ambient temperature sensor has failed or is having a problem, have a professional technician, e.g. B. one from Vermin Club, check the air conditioning system and replace the sensor if necessary.
Will a temperature sensor cause a car not to start?
The sensor will not cause a no start. It could cause a hard start and a rich or lean condition only.
What’s the 2006 Dodge cummins coolant temp sensor location?
My car has 149,000 miles.
My car has an automatic transmission.
What sensor controls the radiator fan?
On most modern cars, the cooling fan is controlled by the Engine Control Unit (ECU) which gets a signal from the coolant temperature sensor.
What’s the 2006 Dodge cummins coolant temp sensor location?
Here’s how to tell if your fan isn’t working, what to do about it, and what the problem might be.
How does a car fan work?
While driving, air flows through the car radiator to keep your engine at normal temperature. But when you’re stopped in a traffic jam, for example, your engine has to use an electric cooling fan to force air through the radiator.
The fan is temperature controlled to ensure the engine gets enough cool air to avoid overheating.
How do I know if the fan is not working?
Many modern cars don’t have a temperature gauge, but a light will indicate if the engine is overheating.
If you see a red or yellow temperature icon on your dashboard, you should stop as soon as it is safe to do so. A warning message may also appear on the dashboard display.
A yellow light likely means the coolant level is low. A red light means your engine is overheating.
What happens if the fan stops working?
If your cooling fan stops working, your engine could overheat. This could cause damage to your engine parts.
It is a serious problem and needs to be investigated by a workshop.
What should I do if my fan breaks?
When the red or yellow temperature light comes on, you must:
Stop as soon as it is safe.
Turn off the engine.
Have your car checked by a workshop or contact us.
In modern cars, it is difficult to check the fan yourself, because often you cannot see it. And when it stops working, you need a professional to fix it for you.
It is therefore best to take your car to a workshop. You can call us if your car won’t start or you think the engine is overheating.
We offer 24/7 roadside assistance. Buy puncture protection
What’s wrong with my fan?
Your mechanic will look for any of these common fan faults:
Blown fuse
Since the radiator fan is electric, the problem could be with the fuse.
Your car’s manual should tell you where the fuse for the cooling system is located. If the fuse has blown, the mechanic must replace it immediately.
Faulty temperature sensor
On most modern cars, the fan is controlled by the Engine Control Unit (ECU), which receives a signal from the coolant temperature sensor.
If it doesn’t work, the fan won’t turn on when it needs to, meaning the motor could overheat.
Fan relay defective
The fan relay controls the power supply to the cooling fan. If there is a problem with the relay, the fan is affected.
This can cause the fan to cycle on and off or not turn on at all.
A wiring problem
Faulty wiring could be to blame. The mechanic will check that all wiring to the fan is properly connected and functional.
Something is wrong with the fan motor
If the motor that drives the fan is defective, a new motor must be installed.
Low coolant level
Check the engine coolant level. If your engine coolant is low, it means the cooling fan has to work harder to keep the engine at normal temperature.
To check the level, locate the coolant expansion tank in the engine compartment. There are usually two marks on it – a minimum and a maximum mark. The coolant level should always be between these 2 marks.
Find out how breakdown protection can help you in the event of car damage:
Published: July 13, 2017 | Updated: April 15, 2020 | Author: The AA
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Engine coolant temperature sensor: how it works, symptoms, problems, testing
Engine coolant temperature sensor: how it works, symptoms, problems, tests
The ECT sensor is connected to the engine computer or PCM
ECT/CHT sensor issues
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Ways to test the engine coolant temperature sensor
Measuring the resistance of the engine coolant temperature (ECT) sensor.
Checking the ECT sensor voltage.
Cold engine IAT and ECT sensor readings.
Intermittent fault in ECT circuit.
Disconnecting the ECT sensor is shown as -40 degrees on the scan tool.
Engine temperature sensor replacement
In a car with an internal combustion engine, the cooling system maintains the optimal temperature of the engine and prevents it from overheating. An engine coolant temperature sensor, or ECT, measures the temperature of the liquid coolant. A typical engine cooling temperature sensor is a negative temperature coefficient (NTC) thermistor, which means that its electrical resistance decreases as the temperature increases. The tip of the ECT sensor protrudes into one of the cooling system passages and is immersed in coolant. Many cars have more than one coolant temperature sensor. In most cars, the primary ECT sensor (ECT Sensor 1) is installed near the thermostat in the cylinder head or block, or on the thermostat housing. A second coolant temperature sensor could be installed in another part of the engine or in the radiator. Some cars use a cylinder head temperature or CHT sensor instead of or in addition to the ECT sensor. The CHT sensor (see photo) works the same way but measures the temperature of the cylinder head metal and is not immersed in coolant. This allows the CHT sensor to correctly measure the temperature of the engine even if there is a loss of coolant. In some cases, this can help prevent overheating. An ECT sensor is connected to the main computer (Powertrain Control Module or PCM). The PCM provides a reference voltage (typically 5 volts) and constantly monitors the ECT sensor signal. Based on this signal, the PCM adjusts engine power and operates the electric cooling fans when the temperature reaches a predefined level. If the signal from the sensor is absent or outside of the expected range, the PCM turns on the check engine light and stores the associated trouble code in its memory. One of the most common problems is when the sensor has a bad connection inside or in the connector or wiring harness. This interrupts the signal to the PCM and the PCM sets the fault. On some cars, symptoms of this problem show up as erratic readings on the temperature gauge. The engine can run in fail-safe mode: the air conditioner can stop working and the radiator fans can run constantly. For example, per Service Bulletin 05-002-12 for the 2011 Dodge Journey with the 2.4 liter engine, to repair trouble codes P0117 (Engine Coolant Temperature Sensor Circuit Low) or P0118 (Engine Coolant Temperature Sensor Circuit High), the brake booster vacuum hose leading to routed close to the ECT sensor connector should be replaced. GM Service Bulletin PI0631F for 2012 -2013 Chevrolet Impala mentions the issue with the wire harness rubbing on the front right side of the transmission. If any of the wires are damaged or shorted, it can cause many different trouble codes, including ECT sensor codes P0117 and P0118. The wiring harness needs to be repaired to fix the problem. Corrosion on sensor terminals or connectors can also cause sensor-related errors. For example, Ford Service Bulletin TSB 11-10-5 describes the problem in the 2010-2012 Fusion, Escape, Transit Connect, Mercury and Lincoln branded vehicles with the 2.5 liter engine: Water contamination in the sensor port can cause codes P1285, P1299 and/or P0128. Depending on the severity of the corrosion, the connector and CHT sensor may need to be cleaned or replaced. Bulletin SI M17 06 12 for some R55, R56, R57 and R58 MINI Cooper/CooperS vehicles describes a similar problem with corrosion inside the engine Coolant Temperature (ECT) Sensor which can lead to inaccurate engine temperature readings. The repair involves installing a new sensor and retrofitting some related parts. Many Check Engine light codes related to the ECT sensor can also be caused by other reasons such as: B. a bad thermostat or problems with the cooling system, including even a leaking head gasket. The problem must be properly diagnosed. Of course, since the ECT sensor is not an expensive part, it is often recommended that it be replaced if there is a suspicion of a malfunction. Because the tip of the sensor must be immersed in coolant, the low coolant level or air pockets in the cooling system can cause the signal from the sensor to be incorrect. If there are problems with the cooling system, the coolant level must always be checked first. The ECT sensor connector needs to be checked for damaged pins or corrosion. There are several ways to test the ECT sensor; You can find the right way in the service manual. One way is to measure the resistance of the sensor at different engine temperatures and compare the readings to the specifications listed in the service manual. For example, we tested the resistance of the ECT sensor in this car. The resistance of the sensor can only be measured when the sensor is disconnected from the circuit. The reason is that if you measure the resistance of an electrical component that is still connected to the circuit, the measurement will not be accurate. The resistance was 2,953 ohms when the engine was cold. It dropped to 248.5 ohms after the engine was fully warmed up; see photo. This sensor is within specifications. Of course, resistance specifications vary by vehicle. Another way to test the sensor is to measure the voltage across the sensor terminals with the ignition on. The sensor is connected to the engine computer (PCM). The PCM supplies the reference voltage (typically 5 volts); Another wire is the sensor ground. Both the reference voltage and ground must be checked first. As the resistance of the sensor decreases as the engine warms up, the voltage also decreases. In this photo we have back checked the ECT sensor to keep it connected to the circuit. When the car was cold, we measured 3.96 volts. With a fully warmed up engine, the voltage dropped to 0.988 volts. With the sensor disconnected, the multimeter reads 5 volts. If there is no voltage, you know the circuit is either open or shorted to ground. For example, one of the wires in the sensor harness could break or rub against a metal part and short out. An example of another sensor that measures temperature is the intake air temperature (IAT) sensor. If the car was parked overnight, the temperature of the engine (ECT or CHT) and the temperature of the IAT sensor in the intake should be very close. We checked the readings from both sensors in the car parked overnight (with the engine cold) using the Torque app. As you can see in the photo, the IAT sensor measures 32°F in the intake while the ECT sensor measures 30.2°F. The slight difference is that the air heats up faster in the morning than the metal engine. If the difference were much larger, it would mean that one of the sensors is reading the temperature incorrectly. When an intermittent problem occurs in the ECT or CHT sensor circuit, mechanics use a scan tool to diagnose it. With the scan tool connected, a mechanic monitors the sensor voltage while gently tapping the sensor and wiggling the wiring harness and connector. A change in voltage indicates the problem area. Another option is to monitor the ECT temperature. For demonstration we monitored the coolant temperature with the Torque app, see photo. We simulated an intermittent poor connection by quickly disconnecting and reconnecting the ECT sensor. As you can see, the temperature drops temporarily and then rises again.: When the ECT sensor is disconnected, the scan tool shows -40 degrees (-40° Fahrenheit equals -40° Celsius). This feature is useful when diagnosing trouble codes related to the ECT sensor. When the PCM sets the trouble code, it also saves the freeze frame, which is a snapshot of the most important parameters at the time of the trouble. If the freeze frame shows the ECT at -40 degrees, it means the ECT sensor circuit was open at the time of the fault. It could be a problem with the sensor itself, the connector, or the wiring harness. In most cars, replacing the ECT or CHT sensor is easy. On many cars, the sensor is held by a clip. Some cars may require a special deep socket. Replacing the engine temperature sensor at a shop will cost between $59 and $129 (labor) for an average car. The sensor (part) is not very expensive; It is best to use an OEM part. After replacing the ECT sensor, the cooling system must be refilled and freed of air pockets. The cooling system is under pressure when it is hot! If you decide to replace the ECT sensor as a do-it-yourself project, refer to the service manual for instructions and safety precautions. When replacing the CHT sensor, it is important to tighten the new sensor to specifications. We’ve posted several links in this article that give you access to a service manual for a subscription fee. No, this is not necessary. However, there may be an intermittent fault related to the engine temperature control and it is difficult to determine whether it is the thermostat or the coolant temperature sensor. In this case, as a rule, both are exchanged at the same time. Read more about the thermostat: how it works, symptoms, problems, tests
Finding The 6.7 Cummins Sensor Locations
Curious about the locations of the 6.7 Cummins sensors? We are here to provide you with all the necessary information. All sensors are located under the hood to keep your vehicle engine performing at its best!
Modern problems need modern solutions. This is where the automotive sensors enter the scene. The sensors measure everything that is happening in and around the engine and signal the ECM accordingly. Based on the data from the sensors, the ECM then decides on the carefully calculated actions.
You need to know where your vehicle’s sensors are located. Because simple damage to the sensors can lead to a drop in performance and even engine damage to the vehicle. Knowing the sensor locations allows them to clean, inspect, and replace them if necessary.
6.7 Cummins Sensor Locations
A variety of sensors are constantly working when the engine is running. Each of them has to collect different data and then send it to the computer.
Let’s take a look at some of the important sensors you can find on your Cummins 6.7 engine.
Location of sensors Crank sensor Lower front of engine Cam sensor Attached to crank sensor with tube MAF sensor Right side of air intake IAT sensor Upper left intake manifold. Inside the second intake port EGT sensor On the exhaust system MAP sensor Driver’s side of the intake manifold. NOx sensor Mounted on the front near the rear bumper Exhaust pressure sensor Next to the exhaust system Coolant temperature sensor Under the EGR tube
6.7 Cummins crank sensor location
The crank sensor on the 6.7 Cummins is one of the easiest sensors to find. It is attached to the lower front part of the engine. If you look from below you can see the sensor very clearly on the balancer.
The crank sensor notifies the ECM of crankshaft position, motion, and speed. This information helps determine the timing and amount of fuel injection.
6.7 Cummins CAM sensor location
The cam sensor is a little hard to find. This sensor is located above the crank sensor. The crank and cam sensors are connected by a tube. You can find the cam sensor by following the tube attached to the crank sensor.
The cam sensor works in tandem with the crank sensor by providing information about the crankshaft. It informs the computer which cylinder is firing, allowing the injectors and ignition to be synchronized.
6.7 Location of Cummins MAF Sensor
Well, the Mass Air Flow (MAF) sensor is mounted on the right side of the air intake, which is on the passenger side.
This MAF sensor detects the amount of air getting to the engine and signals the ECM. With this information, the ECM decides how much fuel to inject and for how long.
6.7 Cummins IAT Sensor Location
Intake Air Temperature or IAT is located on the upper left side of the intake manifold. You can find it in the second intake duct.
The IAT sensor signals the ECM by evaluating the temperature and density of the air. Based on this data, the ECM initiates the correct spark and fuel injection into the engine. This process helps the engine start smoothly.
6.7 Cummins EGT Sensor Location
The EGT sensor, the exhaust gas temperature sensor, is located on the exhaust system.
This sensor monitors the exhaust gas temperature of the engine. The absence of this sensor can make your engine hot and dangerous.
6.7 Cummins Temperature Sensor Location
In Cummins 6.7, the coolant temperature sensor is placed under the EGR pipe.
The temperature sensor allows the fuel management system to get data on the temperature of the engine. This knowledge helps the system determine the timing and amount of fuel injection.
6.7 Cummins MAP Sensor Location
The MAP sensor in 6.7 Cummins is located on the driver’s side of the intake manifold. It looks like a small black box.
The Manifold Absolute Pressure (MAP) sensor calculates air pressure for the ECM to allow it to deliver the correct amount of air/fuel mixture to the engine.
You can also see more details on the location of the 6.7 Cummins MAP sensor and an easy access guide for service.
6.7 Locations of Cummins exhaust sensors
The exhaust gas pressure sensor is placed directly next to the exhaust system on a 6.7 Cummins.
This sensor compares the before and after pressure of the exhaust gas that passes through the filter. This will let you know if the filter needs to be repaired or replaced.
6.7 Location of Cummins NOx Sensor
There are two NOx sensors. The first is mounted on the front of the vehicle. The second is near the bumper. It is mounted on the frame rail on the passenger side.
The NOx sensor helps the SCR evaluate the NOx gas exiting the engine and comply with emission regulations. The SCR uses this information to determine how much area should be injected.
This video will help you too!
Frequently Asked Questions (FAQs)
Where is the MAF sensor on a 6.7 Cummins? Among the other 6.7 Cummins sensor locations, the MAF sensor is located on the right or passenger side of the air intake. MAF detects the airflow pressure and sends the data to the ECM. The ECM uses this data to determine the amount and timing of fuel injection. What does the MAP sensor do on a 6.7 Cummins? The job of the MAP sensor is to measure the air pressure and send the results to the ECM. The manifold air pressure sensor allows the ECM to control the amount and timing of air/fuel mixture injection. How do you clean a 6.7 Cummins map sensor? Carefully detach the sensor from the vehicle. Place the sensor on a flat surface. Get a soft cleaning cloth, preferably those used to clean electrical parts. Use an electrical parts cleaner to clean the sensor. This is the most effective way to clean the sensor. What is a MAF sensor? MAF sensor refers to the mass air flow sensor. The MAF sensor detects the amount of air in the engine and sends the result to the ECM. Then the ECM can accurately measure the amount and timing of fuel injection.
Wrap up
Sensors are very important parts of your vehicle. The sensors collect various types of data to ensure a smooth and comfortable driving experience.
If any sensor becomes damaged in any way, your vehicle is at risk of malfunction, poor performance, and in some cases even engine damage.
Therefore, it is very important to know the locations of your 6.7 Cummins sensors so that you can take care of them when they need it. A dirty sensor can often cause problems. It is therefore necessary to check the sensors from time to time to clean them and look for possible damage.
Repairing and replacing the sensor early will save your engine from major problems. Know the sensors and where to find them to better understand your vehicle and ensure a longer service!
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What’s the 2006 Dodge cummins coolant temp sensor location?
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accountCircle Robert H. January 5, 2021
The coolant temperature sensor on the 2006 Dodge Cummins is located on the back of the cylinder head just below the driver’s side air intake. If you stand by the driver’s side front fender and look at the engine, the sensor is several inches above the starter motor and to the right of the fuel filter. The sensor sends data to the computer, which interprets the information and then adjusts the performance of other components. A bad sensor can cause the computer to think the coolant temperature is okay and not turn on the fan. This could lead to overheating and possible damage to the motor. A faulty sensor can also cause hard starts and rough idle.
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