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Contents
Can you bypass fuel tank pressure sensor?
Fuel tank pressure sensor bypass is a ‘hit or miss’ repair. You can plug or bypass the pressure sensor. But once you bypass it, the check engine light will illuminate on the dashboard.
How does a fuel tank pressure sensor work?
The fuel tank pressure sensor is part of the fuel pump assembly and is mounted on top of the tank or inside the tank. It’s part of the evaporative emissions system (commonly referred to as “EVAP”) and reads pressure in the fuel system to detect evaporative leaks, such as a loose or faulty gas cap.
What should the fuel tank pressure sensor voltage be?
The PCM provides a 5.0 volt reference and a ground. The Fuel Tank Pressure sensor signal varies between ground and 5.0 volts as fuel tank pressure varies. The Fuel Tank Pressure sensor voltage increases as the fuel tank pressure decreases (negative pressure, or vacuum).
How do you run a fuel pump directly to a battery?
To do this, you’ll need to disconnect the wire from the pump and connect it directly to the positive terminal of your battery. Then, run a jumper wire from the negative terminal of your battery to a ground point on your vehicle. This will complete the circuit and allow power to flow directly to the fuel pump.
How can I start my car without a fuel pump?
- Fuel Pressure Gauge – Attaching a fuel pressure gauge directly onto the engine will allow the car to start and drive. …
- Manual Pressure – Using pressure to assist the fuel through the lines is another simple technique to start the car.
What are the symptoms of a faulty fuel tank pressure sensor?
- Check Engine Light.
- Low Power.
- Problems Starting.
- Stalling.
- Bad Fuel Economy.
How do you know if your fuel pressure sensor is going bad?
When your fuel rail pressure sensor goes bad, the “Check Engine” warning light may illuminate on your dashboard. This light activates whenever the engine control unit detects an issue within the vehicle that affects the engine in some way.
Is fuel pressure sensor important?
There are a few important reasons: To identify leaks in the fuel system. To alert you to a defective gas cap. To signal the engine computer that the evaporative emissions system is operating properly.
Is fuel pressure sensor important?
There are a few important reasons: To identify leaks in the fuel system. To alert you to a defective gas cap. To signal the engine computer that the evaporative emissions system is operating properly.
Can I drive with a faulty fuel sensor?
Engine stalling might occur as the fuel rail pressure sensor goes from bad to worse. You will be driving and then suddenly, your engine will stall. It may also stall while idling. This will make driving extremely difficult (and dangerous) and it should motivate you to do something about it.
What causes fuel tank pressure sensor?
Overexposure to extreme temperatures, weather, vibration, and/or corrosive fuel vapors. Over filling the fuel tank will cause fuel to overflow into the charcoal canister and other overflow lines can cause the sensor to fail.
Symptoms of a Bad Fuel Tank Pressure Sensor and Everything Related – Rx Mechanic
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Ratings - Top rated: 3.1
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- Summary of article content: Articles about Symptoms of a Bad Fuel Tank Pressure Sensor and Everything Related – Rx Mechanic Updating …
- Most searched keywords: Whether you are looking for Symptoms of a Bad Fuel Tank Pressure Sensor and Everything Related – Rx Mechanic Updating The fuel tank pressure (FTP) sensor is a vital evaporative emission control system (EVAP). The EVAP system traps unburnt fuel vapor from the gas tank…
- Table of Contents:
What Does The Fuel Tank Pressure Sensor Do
Symptoms Of A Bad Fuel Tank Pressure Sensor
How Do I Test A Fuel Tank Pressure Switch
How Do You Fix A Gas Tank Sensor
Final Words
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FIX/ BYPASS STX12F FAILED FUEL LEVEL SENSOR stx12f stx15f kawasaki pwc jetski – YouTube
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- Summary of article content: Articles about FIX/ BYPASS STX12F FAILED FUEL LEVEL SENSOR stx12f stx15f kawasaki pwc jetski – YouTube Updating …
- Most searched keywords: Whether you are looking for FIX/ BYPASS STX12F FAILED FUEL LEVEL SENSOR stx12f stx15f kawasaki pwc jetski – YouTube Updating Why spend $200 on a new fuel level sensor that’s not even accurate to begin with??? This is how I bypassed the fuel level sensor in my 2003 Kawasaki STX12F J…mechanic, kzguy2, jetski, flashing fuel, boat, NNKH, fuel sensor, fuel, how to stop beeping, fuel level, no nonsense know how, stx12f, jet ski, NoNonsenseKnowHow, beeping, yamaha, stx, pwc, how to replace fuel sensor, kawasaki, stx15f
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How to Replace Fuel Rail Pressure Sensor 2006-10 Ford Explorer – YouTube
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- Summary of article content: Articles about How to Replace Fuel Rail Pressure Sensor 2006-10 Ford Explorer – YouTube Updating …
- Most searched keywords: Whether you are looking for How to Replace Fuel Rail Pressure Sensor 2006-10 Ford Explorer – YouTube Updating Buy Now!New Fuel Injection Pressure Sensor from 1AAuto.com http://1aau.to/ic/1AFIN00028The fuel tank pressure sensor feeds data about pressure inside the fue…2006, 2007, 2008, 2009, 2010, Ford Explorer, Fuel Pressure Sensor, Fuel Pressure Sensor Ford Explorer, TRQ, Taillights, aftermarket part, car, car parts, car repair, diagnostics, diy, headlights, regulators, repairs, replace Fuel Pressure Sensor, replace Fuel Pressure Sensor Ford Explorer, shocks, shocks and struts, strut, strut assembly, trqautoparts
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Fuel Tank Pressure Sensor | Cars.com
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Symptoms of a Bad Fuel Tank Pressure Sensor and Everything Related – Rx Mechanic
- Article author: rxmechanic.com
- Reviews from users: 41660 Ratings
- Top rated: 3.8
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- Summary of article content: Articles about Symptoms of a Bad Fuel Tank Pressure Sensor and Everything Related – Rx Mechanic Fuel tank pressure sensor bypass is a ‘hit or miss’ repair. You can plug or bypass the pressure sensor. But once you bypass it, the check engine … …
- Most searched keywords: Whether you are looking for Symptoms of a Bad Fuel Tank Pressure Sensor and Everything Related – Rx Mechanic Fuel tank pressure sensor bypass is a ‘hit or miss’ repair. You can plug or bypass the pressure sensor. But once you bypass it, the check engine … The fuel tank pressure (FTP) sensor is a vital evaporative emission control system (EVAP). The EVAP system traps unburnt fuel vapor from the gas tank…
- Table of Contents:
What Does The Fuel Tank Pressure Sensor Do
Symptoms Of A Bad Fuel Tank Pressure Sensor
How Do I Test A Fuel Tank Pressure Switch
How Do You Fix A Gas Tank Sensor
Final Words
ABOUT US
Affiliate Disclosure
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Fuel Tank Pressure Sensor override? | GMT400 – The Ultimate 88-98 GM Truck Forum
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- Summary of article content: Articles about Fuel Tank Pressure Sensor override? | GMT400 – The Ultimate 88-98 GM Truck Forum Have a 99 Burban, 5.7l, with a custom 20g fuel cell. It doesn’t incorporate the fuel pressure sensor, so it’s giving me a CEL. …
- Most searched keywords: Whether you are looking for Fuel Tank Pressure Sensor override? | GMT400 – The Ultimate 88-98 GM Truck Forum Have a 99 Burban, 5.7l, with a custom 20g fuel cell. It doesn’t incorporate the fuel pressure sensor, so it’s giving me a CEL. Have a 99 Burban, 5.7l, with a custom 20g fuel cell. It doesn’t incorporate the fuel pressure sensor, so it’s giving me a CEL. Is there a way to trick it…
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Auto mechanics, step inside please….fuel tank question — gunsandammo
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- Summary of article content: Articles about Auto mechanics, step inside please….fuel tank question — gunsandammo You can plug and bypass the pressure sensor, but you will definitely have a check engine light on after the repair. The pressure sensor is there … …
- Most searched keywords: Whether you are looking for Auto mechanics, step inside please….fuel tank question — gunsandammo You can plug and bypass the pressure sensor, but you will definitely have a check engine light on after the repair. The pressure sensor is there … 2002 ford f150, 27 gallon fuel tank.
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Disable OBD2 Fuel Tank Pressure Sensor? – Honda-Tech – Honda Forum Discussion
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- Summary of article content: Articles about Disable OBD2 Fuel Tank Pressure Sensor? – Honda-Tech – Honda Forum Discussion Is there any way to disable the Fuel Tank Pressure Sensor on a 1998 … (there is a resistor trick to bypass the FTP but it’s hit or miss). …
- Most searched keywords: Whether you are looking for Disable OBD2 Fuel Tank Pressure Sensor? – Honda-Tech – Honda Forum Discussion Is there any way to disable the Fuel Tank Pressure Sensor on a 1998 … (there is a resistor trick to bypass the FTP but it’s hit or miss). Disable,OBD2,Fuel,Tank,Pressure,Sensor,97, accord, civic, crv, ftp, fuel, hatchback, homda, honda, obd2, odyssey, p0453, pressure, sensor, tank, Disable OBD2 Fuel Tank Pressure Sensor?, Civic Honda, CRX, Del Sol, Integra, where is Honda, forum, Honda, Acura, turbo, exhaust, intake, import, ht, accord, honda-tech, honda tech, honda tech forum, crx, civic, s2000, sale, parts, tl, nsx, tsx, type-r, rsx, techEngine Management and Tuning – Disable OBD2 Fuel Tank Pressure Sensor? – Is there any way to disable the Fuel Tank Pressure Sensor on a 1998 USDM ITR 37820-P73-A03 Ecu so it doesn’t throw a P0450 and P0453 CEL? I need to run a USDM ITR ecu in a 1997 GSR but the GSR doesn’t have a fuel tank pressure sensor, which the…
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How To Tell If Fuel Tank Pressure Sensor Is Bad? – amortips.com
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- Summary of article content: Articles about How To Tell If Fuel Tank Pressure Sensor Is Bad? – amortips.com Over time a faulty fuel tank pressure sensor will cause low fuel efficiency, trouble starting the vehicle and/or stalling, and eventually keep the vehicle … …
- Most searched keywords: Whether you are looking for How To Tell If Fuel Tank Pressure Sensor Is Bad? – amortips.com Over time a faulty fuel tank pressure sensor will cause low fuel efficiency, trouble starting the vehicle and/or stalling, and eventually keep the vehicle … Common reasons for failure: How To Tell If Fuel Tank Pressure Sensor Is Bad?Signs of a bad fuel tank pressure sensorYour check engine warning light comes on.Your fuel consumption increases noticeably.A loss of power and acceleration.Hard starting.Stalling.Black smoke coming out of tailpipe.Gasoline dripping from tailpipe.Your
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How To Tell If Fuel Tank Pressure Sensor Is Bad
What happens when the fuel tank pressure sensor goes bad
How do you test a fuel tank pressure sensor
How do you troubleshoot a fuel pressure sensor
Can you drive with a bad fuel pressure sensor
Where is fuel tank pressure sensor
How much is a fuel tank pressure sensor
How do you change a fuel tank pressure sensor
Is a fuel pressure regulator the same as a fuel pressure sensor
Why do fuel pressure sensors fail
Can fuel pressure regulator cause no start
How much does it cost to replace a fuel pressure sensor
Can you clean a fuel pressure sensor
How long does it take to fix a fuel pressure sensor
What is normal fuel tank pressure
What causes high fuel tank pressure
How does an in tank fuel pressure regulator work
Is a fuel pressure regulator necessary
What does a fuel pressure regulator look like
What would happen if I unplug my fuel composition sensor
What are signs that your fuel pump is going out
How do I know if my fuel pressure regulator is working
What sensors can cause a car not to start
Can a bad fuel pressure regulator cause a lean condition
Is a fuel sensor hard to replace
How many fuel sensors are in a car
What should fuel tank pressure be at idle
Should there be pressure when removing gas cap
Should a fuel tank have pressure
Why is there air in my gas tank
How do you fix high fuel pressure
Where should a fuel pressure regulator be located
Can bad injectors cause low fuel pressure
How do I check my fuel pressure without a gauge
What are the symptoms of a bad fuel pressure damper
2 Signs of a bad Fuel Tank Pressure Sensor failing symptoms circuit high low voltage test P0452
Fuel Tank Pressure Sensor Quick-Fix
How To Test And Replace Fuel Tank Pressure Sensor P0451 P0452 P0453
NTK – Fuel Tank Pressure Sensor (FTP)
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Symptoms of a Bad Fuel Tank Pressure Sensor and Everything Related – Rx Mechanic
The fuel tank pressure (FTP) sensor is a vital evaporative emission control system (EVAP). The EVAP system traps unburnt fuel vapor from the gas tank and transports it back to the fuel system. This offers a high fuel economy, minimizes environmental pollution, and prevents premature engine damage. What is a fuel tank pressure sensor, anyway?
The FTP sensor is normally placed on top or inside the gas tank. Its primary function is to detect the pressure in the fuel system and enhance fuel economy. If it fails, it’ll decrease the amount of gas in the combustion chamber. This can cause engine stalling, weak acceleration, bad gas mileage, and hard starting.
In this article, we’ll discuss what causes a fuel tank pressure sensor to go bad. And how to test a fuel tank pressure sensor. We’ll also outline the symptoms of a bad fuel tank pressure sensor and answer related questions.
What Does The Fuel Tank Pressure Sensor Do?
As the name suggests, the FTP sensor reads the gas pressure in the fuel system. This helps you to determine if there is a leak in the fuel system, especially the one related to evaporation. Remember, the FTP sensor is an evaporative emission control system (EVAP) component.
If a leak exists on the gas cap or vapor is escaping anywhere in the system, the FTP sensor will notify you.
The FTP sensor works in harmony with the powertrain control module. The FTP sensor relates all the collected data to the car computer. For this reason, if the fuel tank pressure sensor determines a problem or leaks in the fuel system, the engine control module will trigger the engine warning light.
The illumination of the engine warning light is to notify the driver of any imminent issues in the system. The engine check light doesn’t necessarily mean any issue with the fuel tank pressure sensor. Therefore, once the engine warning light illuminates the dashboard, diagnose the vehicle with an OBDII scanner.
An OBDII diagnostics tool will determine why the car computer triggers a light and pull out logged diagnostics trouble codes. The error code will relate to the culprit, making it easier for a mechanic to track and fix it.
If you are a DIYer, you can get a diagnostic scanner from a local auto shop or Amazon for around $200. This tool will not fix the problem for you; however, it’ll narrow down to the cause of the problem and ways to rectify it.
Symptoms Of A Bad Fuel Tank Pressure Sensor
Calm your nerves when you’re wondering, ‘what happens when a fuel pressure sensor goes bad?’ Yes, there is good and bad news to expect. The awesome news is there are chances your car will run pretty fine. It may not affect your car performance in any way.
The sad news is that the vehicle will fail the emission test when the FTP sensor malfunctions. Of course, the engine warning light will appear on the dashboard.
And if you leave the light, thinking it appeared because of a bad FTP sensor, you won’t know when the car computer logs another issue, leading to catastrophic engine damage.
Here are other notable symptoms of bad EVAP fuel tank pressure sensors that show when the FTP sensor is bad.
Engine warning light
As we explained above, the engine warning light will illuminate when the FTP sensor malfunctions. The car computer will log diagnostics trouble code P0452. Of course, there can be many causes. It could be a broken seal on the gas cap or a leak in the fuel system.
Bad gas mileage
When any fuel system sensor sends false information regarding fuel usage to the car computer, it’ll cause poor fuel economy. If the engine control module doesn’t know how much fuel the vehicle uses and how much gas to maintain an appropriate speed, the car will consume much fuel. This will lead to bad engine performance. You may have poor engine power output, poor acceleration, and lower miles per gallon.
Engine stalling
If you notice a frequent engine stalling or hesitation, it could mean the FTP sensor is bad. Since the car computer also uses the signal from the FTP sensor in calculating the fuel/air mixture ratio for the combustion process, a false reading can affect the combustion cycle. A compromised combustion process will lead to improper fuel burning, which will cause engine hesitation and stalling.
Hard engine starting
As much as a lousy FTP sensor can compromise the combustion process, it can make the engine difficult to start. If this sensor signals false reading to the powertrain control module, it can lead to a lean air-fuel mixture. This means a higher volume of air and a smaller volume of fuel. The engine may find it difficult to start with an inappropriate fuel mixture.
How Do I Test A Fuel Tank Pressure Switch?
Checking the FTP sensor is pretty simple. It is a three-wired component that is quite easy to test. The three wires are a ground wire, a voltage wire that goes to the engine control module, and another wire that returns volts to the ECM.
So, if you suspect a bad FTP sensor, check these wires to know if the FTP switch is bad or if the problem is from somewhere else.
Unfortunately, you may have to drop the gas tank to access the FTP sensor because it is mounted on top or inside the gas tank. For this reason, it is typically inaccessible for an average motorist, which explains why you need to consult your mechanic to check and replace the sensor.
However, here are a few ways to follow if you decide to check the FTP sensor yourself.
Locate the sensor
Unplug the wiring harness
Connect your multimeter or voltmeter
Compare the reading on the voltmeter and compare the specified signal on your manual. Ensure the readings are the same.
Check the wiring harness and replace corroded or burnt wires.
For a visual presentation on how to test the FTP sensor, watch this YouTube video.
How Do You Fix A Gas Tank Sensor?
If the test proves you have a defective FTP sensor, you may ask, can you drive with a bad tank pressure sensor?
As we explained earlier, a bad FTP sensor cannot affect the overall engine performance. It can also project several drivability issues and trigger engine check lights on the dashboard. For this reason, do not drive with a defective gas tank sensor.
So, what should you do, then?
Fix it before hitting the road. Unfortunately, the only recommendation to fix the FTP sensor is to replace it. The sensor is pretty inexpensive, but the replacement cost can be high depending on your fuel tank design.
FAQs
Q: Can a bad fuel pressure sensor cause no start?
If you have a lousy FTP sensor, it can cause the fuel injectors to send an obscene amount of gas to the combustion chamber. This can lead to hard starting.
At first, it will only take a few attempts before turning on the vehicle. But as the case worsens, it’ll take several attempts before starting the vehicle. If you keep ignoring it, it may get to a state where the engine will start and shut off. In rare situations, it may cause the engine not to start at all.
Q: Can a bad fuel pressure sensor cause a misfire?
Like fuel pressure regulators, the common sign of a bad FTP sensor is weak acceleration and engine misfire. You’ll notice a sudden loss of engine power output when driving. The vehicle may stumble, hesitate, or even bog when taking an early morning ride or on a sunny afternoon.
The acceleration may become pretty fine in no time and suddenly fail again. This can be dangerous. Therefore, do not drive with a bad FTP sensor if it gives sudden changes in the accelerations.
Q: How long does a fuel tank pressure sensor last?
Automakers design FTP sensors to last the vehicle’s lifespan like most car sensors and switches. However, the sensor can break when working on the fuel tank because of its location. A mechanic may mistakenly break it when working on the gas tank. It can also wear on the terminals and damage.
Q: How much is a fuel tank pressure sensor?
The average replacement cost for an FTP sensor is $250 to $325. The parts should be around $50 to $75, while the labor charge is around $200 to $250.
This is a general replacement estimation. It doesn’t deal with any specific vehicle make or model. Other factors, like taxes, location, and related repairs, may increase or reduce the replacement cost.
Q: Can you clean a fuel pressure sensor?
Of course, you can clean a fuel pressure sensor, but there are huge chances that it won’t make any difference. Because of the location of the sensor, dirt can clog the terminals and prevent them from sending accurate signals to the car computer. If this is the case, cleaning will revive the sensor. However, in most cases, the only option is to replace the sensor.
Q: Can you bypass a fuel tank pressure sensor?
Fuel tank pressure sensor bypass is a ‘hit or miss’ repair. You can plug or bypass the pressure sensor. But once you bypass it, the check engine light will illuminate on the dashboard.
Final Words
The FTP sensor is one of those important components many motorists do not know in a car. However, the signal from this sensor offers a good fuel economy, saves you some cash, and enhances optimal engine performance.
Unfortunately, symptoms of a bad fuel tank pressure sensor can be mistaken for other system malfunctions. Therefore, if you notice any of the outlined signs above, ensure you diagnose the vehicle with a scan tool. This will help you fix the culprit without doing guesswork.
Symptoms of a Bad Fuel Tank Pressure Sensor and Everything Related – Rx Mechanic
The fuel tank pressure (FTP) sensor is a vital evaporative emission control system (EVAP). The EVAP system traps unburnt fuel vapor from the gas tank and transports it back to the fuel system. This offers a high fuel economy, minimizes environmental pollution, and prevents premature engine damage. What is a fuel tank pressure sensor, anyway?
The FTP sensor is normally placed on top or inside the gas tank. Its primary function is to detect the pressure in the fuel system and enhance fuel economy. If it fails, it’ll decrease the amount of gas in the combustion chamber. This can cause engine stalling, weak acceleration, bad gas mileage, and hard starting.
In this article, we’ll discuss what causes a fuel tank pressure sensor to go bad. And how to test a fuel tank pressure sensor. We’ll also outline the symptoms of a bad fuel tank pressure sensor and answer related questions.
What Does The Fuel Tank Pressure Sensor Do?
As the name suggests, the FTP sensor reads the gas pressure in the fuel system. This helps you to determine if there is a leak in the fuel system, especially the one related to evaporation. Remember, the FTP sensor is an evaporative emission control system (EVAP) component.
If a leak exists on the gas cap or vapor is escaping anywhere in the system, the FTP sensor will notify you.
The FTP sensor works in harmony with the powertrain control module. The FTP sensor relates all the collected data to the car computer. For this reason, if the fuel tank pressure sensor determines a problem or leaks in the fuel system, the engine control module will trigger the engine warning light.
The illumination of the engine warning light is to notify the driver of any imminent issues in the system. The engine check light doesn’t necessarily mean any issue with the fuel tank pressure sensor. Therefore, once the engine warning light illuminates the dashboard, diagnose the vehicle with an OBDII scanner.
An OBDII diagnostics tool will determine why the car computer triggers a light and pull out logged diagnostics trouble codes. The error code will relate to the culprit, making it easier for a mechanic to track and fix it.
If you are a DIYer, you can get a diagnostic scanner from a local auto shop or Amazon for around $200. This tool will not fix the problem for you; however, it’ll narrow down to the cause of the problem and ways to rectify it.
Symptoms Of A Bad Fuel Tank Pressure Sensor
Calm your nerves when you’re wondering, ‘what happens when a fuel pressure sensor goes bad?’ Yes, there is good and bad news to expect. The awesome news is there are chances your car will run pretty fine. It may not affect your car performance in any way.
The sad news is that the vehicle will fail the emission test when the FTP sensor malfunctions. Of course, the engine warning light will appear on the dashboard.
And if you leave the light, thinking it appeared because of a bad FTP sensor, you won’t know when the car computer logs another issue, leading to catastrophic engine damage.
Here are other notable symptoms of bad EVAP fuel tank pressure sensors that show when the FTP sensor is bad.
Engine warning light
As we explained above, the engine warning light will illuminate when the FTP sensor malfunctions. The car computer will log diagnostics trouble code P0452. Of course, there can be many causes. It could be a broken seal on the gas cap or a leak in the fuel system.
Bad gas mileage
When any fuel system sensor sends false information regarding fuel usage to the car computer, it’ll cause poor fuel economy. If the engine control module doesn’t know how much fuel the vehicle uses and how much gas to maintain an appropriate speed, the car will consume much fuel. This will lead to bad engine performance. You may have poor engine power output, poor acceleration, and lower miles per gallon.
Engine stalling
If you notice a frequent engine stalling or hesitation, it could mean the FTP sensor is bad. Since the car computer also uses the signal from the FTP sensor in calculating the fuel/air mixture ratio for the combustion process, a false reading can affect the combustion cycle. A compromised combustion process will lead to improper fuel burning, which will cause engine hesitation and stalling.
Hard engine starting
As much as a lousy FTP sensor can compromise the combustion process, it can make the engine difficult to start. If this sensor signals false reading to the powertrain control module, it can lead to a lean air-fuel mixture. This means a higher volume of air and a smaller volume of fuel. The engine may find it difficult to start with an inappropriate fuel mixture.
How Do I Test A Fuel Tank Pressure Switch?
Checking the FTP sensor is pretty simple. It is a three-wired component that is quite easy to test. The three wires are a ground wire, a voltage wire that goes to the engine control module, and another wire that returns volts to the ECM.
So, if you suspect a bad FTP sensor, check these wires to know if the FTP switch is bad or if the problem is from somewhere else.
Unfortunately, you may have to drop the gas tank to access the FTP sensor because it is mounted on top or inside the gas tank. For this reason, it is typically inaccessible for an average motorist, which explains why you need to consult your mechanic to check and replace the sensor.
However, here are a few ways to follow if you decide to check the FTP sensor yourself.
Locate the sensor
Unplug the wiring harness
Connect your multimeter or voltmeter
Compare the reading on the voltmeter and compare the specified signal on your manual. Ensure the readings are the same.
Check the wiring harness and replace corroded or burnt wires.
For a visual presentation on how to test the FTP sensor, watch this YouTube video.
How Do You Fix A Gas Tank Sensor?
If the test proves you have a defective FTP sensor, you may ask, can you drive with a bad tank pressure sensor?
As we explained earlier, a bad FTP sensor cannot affect the overall engine performance. It can also project several drivability issues and trigger engine check lights on the dashboard. For this reason, do not drive with a defective gas tank sensor.
So, what should you do, then?
Fix it before hitting the road. Unfortunately, the only recommendation to fix the FTP sensor is to replace it. The sensor is pretty inexpensive, but the replacement cost can be high depending on your fuel tank design.
FAQs
Q: Can a bad fuel pressure sensor cause no start?
If you have a lousy FTP sensor, it can cause the fuel injectors to send an obscene amount of gas to the combustion chamber. This can lead to hard starting.
At first, it will only take a few attempts before turning on the vehicle. But as the case worsens, it’ll take several attempts before starting the vehicle. If you keep ignoring it, it may get to a state where the engine will start and shut off. In rare situations, it may cause the engine not to start at all.
Q: Can a bad fuel pressure sensor cause a misfire?
Like fuel pressure regulators, the common sign of a bad FTP sensor is weak acceleration and engine misfire. You’ll notice a sudden loss of engine power output when driving. The vehicle may stumble, hesitate, or even bog when taking an early morning ride or on a sunny afternoon.
The acceleration may become pretty fine in no time and suddenly fail again. This can be dangerous. Therefore, do not drive with a bad FTP sensor if it gives sudden changes in the accelerations.
Q: How long does a fuel tank pressure sensor last?
Automakers design FTP sensors to last the vehicle’s lifespan like most car sensors and switches. However, the sensor can break when working on the fuel tank because of its location. A mechanic may mistakenly break it when working on the gas tank. It can also wear on the terminals and damage.
Q: How much is a fuel tank pressure sensor?
The average replacement cost for an FTP sensor is $250 to $325. The parts should be around $50 to $75, while the labor charge is around $200 to $250.
This is a general replacement estimation. It doesn’t deal with any specific vehicle make or model. Other factors, like taxes, location, and related repairs, may increase or reduce the replacement cost.
Q: Can you clean a fuel pressure sensor?
Of course, you can clean a fuel pressure sensor, but there are huge chances that it won’t make any difference. Because of the location of the sensor, dirt can clog the terminals and prevent them from sending accurate signals to the car computer. If this is the case, cleaning will revive the sensor. However, in most cases, the only option is to replace the sensor.
Q: Can you bypass a fuel tank pressure sensor?
Fuel tank pressure sensor bypass is a ‘hit or miss’ repair. You can plug or bypass the pressure sensor. But once you bypass it, the check engine light will illuminate on the dashboard.
Final Words
The FTP sensor is one of those important components many motorists do not know in a car. However, the signal from this sensor offers a good fuel economy, saves you some cash, and enhances optimal engine performance.
Unfortunately, symptoms of a bad fuel tank pressure sensor can be mistaken for other system malfunctions. Therefore, if you notice any of the outlined signs above, ensure you diagnose the vehicle with a scan tool. This will help you fix the culprit without doing guesswork.
Fuel Tank Pressure Sensor override?
It could be done but you would need to read up on voltage dividers http://www.ohmslawcalculator.com/voltage-divider-calculator The tank pressure sensor is a 3 wire/ pin with a source voltage of 5V. The output, Vout, back to the ECM is a portion of the 5V and a function of the value of “R2” which would be set by the position of the wiper inside the sensor that moves due to the tank pressure. The total variance to the ECM being near 0 when R2 is small, and near 5V when R2 is large. an R2 value of something greater than zero but less than R1+R2 provide the ECM with happy voltage. R1+R2 could be gained by measuring resistance across working sensor while on the bench.If you knew the range of happy voltage you could then size an R2 and build a divider to go across the plug back to ECM effectively making a fixed sensor. That might work. but then you have the codes when the EVAP solenoid does its checks so finding the right resistor might take a while.
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