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How to Reset the ECU After Changing an O2 Sensor | It ...

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The O2 sensor in your vehicle monitors the exhaust gases coming out of the engine. It determines the amount of oxygen in the gases, which indicates how well the fuel is being burned. The O2 sensor then sends information to the electronic control unit, or ECU, the vehicle''s computer. The ECU then adjusts the ...

Check Engine Light Problem 19992013 Silverado Sierra ...

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· The second time it came on, code the same P0446 appeared, he found the Fuel Tank Pressure Sensor was failing, so he replaced that, the light went off. Two weeks later the light came back on, same code P0446, so back to the mechanic I went, this time he just put his computer machine on it and ran a test with it.

Fuel tank pressure sensor replacement on a Chevrolet ...

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Tighten Gas Cap message 19992013 Silverado Sierra ...

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· Drives:2016 GMC SLT CC 4x4. Share. Posted April 3, 2013. Or in cases of the gas cap gasket failing or not tightened completely, you will get a P0442, small leak. However, under most conditions, it is the gas cap is hanging down the side of the vehicle, or on a fuel dispenser and then you get the P0455. Quote.

EVAP System Leak Triggers Check Engine Light | 7 Causes ...

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· Fuel tank leaking. A small leak in any of the EVAP hoses or fuel tank hoses. A small leak in the purge valve or vent valve. What to Do if Your ‘Check Engine’ Light Comes On: First, confirm it’s the ‘Service Engine’ or ‘Check Engine’ light. If you’re not sure, consult your owner’s manual.

The Gas Cap Code and DIY Check Engine Light Car Repair ...

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Gas Cap Code. The check engine light will come on and set a code if the fuel system isn’t sealed airtight. There’s also a possibility you have a bad fuel tank pressure sensor. On some automobiles these issues set the P0440 code. I also want to talk more about the evaporation emissions system.

pressure release from gas tank | GMC Truck Forum

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· Check engine light came on recently, never bothered to scan it. Got gas yesterday and when I unscrewed the gas cap there was a ton of pressure that was released so I''''m assuming this is the do you remedy this,new cap? I don''t see any cracks in it and I''m sure it''s on tight.

Chevrolet Silverado 1500 Questions Fuel tank pressure ...

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Fuel tank pressure sensor I replaced my fuel pump a month ago and now my service engine soon light came on and its my fuel tank pressure sensor is th... Skip to content. Used Cars New Cars ... 2018 at 05:18 AM about the 2002 Chevrolet Silverado 1500 LS LB RWD.

How To Fix Check Engine Light Gas Cap | Detailed Guide ...

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· If it’s for gas cap failure, the fixing will take a mere few minutes. Turn off the engine vehicle. Open the gas cap door. The door is usually locked, you’ll find a push button to unlock it. The button should be located under the steering column or the floorboard beside the driver’s side seat. 2.

Two Weird Reasons For Silverado Fuel Gauge Problems

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· It has stopped sensing the fuel level or stopped letting the fuel gauge in your instrument cluster know what it’s sensing, leaving you to try to guesstimate how much fuel you have. When this happens you’re left guessing how many miles you have left on your tank of fuel while your fuel level gauge bounces around from empty to ½ a tank to ¼ of a tank to full and …

Just replaced fuel pump. Now have a check engine light ...

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Just replaced fuel pump. Now have a check engine light P069E. Stays on. 2009 Silverado I replaced the fuel pump Answered by a verified Chevy Mechanic

P0496 EVAP Flow During A NonPurge Condition

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To test the fuel tank pressure sensor you will need to have a high end scan tool to ... My engine light came on with a code P0496 which is EVAP can anyone tell me where ... 2009 Hyundai Accent GS 110,000 mi 5spd manual Have had codes p0451 and p0496 for the past 10k miles, have replaced gas cap with OEM and FTPS and PCSV and CCV ...

Changed MAF about 2 weeks ago, light still on ...

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· the check engine light came on a little bit ago and we got it tested and it was the mass air flow sensor, we recently about 2 weeks ago changed it but the engine light remains on and i know its supposed to take a minute to go out but its been longer now, also every time i get gas (it did this before i changed the MAF as well and was a result of needing to change it) and …

Fuel Tank Pressure Sensor Location: We Have Problems with ...

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We have problems with engine light coming on we replaced already the fuel cap and still has the light on. ... The fuel tank pressure sensor is on top of the tank. ... I Have A 2007 Chevy Equinox That Began Smelling Like Gas About A Week Ago.

Chevrolet Silverado 1500 Questions i replaced my ...

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· i replaced my throttle positioning sensor. i may have to change the pressure sensor on my fuel tank. my service engine light is on and my truck ... I recently change my O2 sensor on my 2000 chevy silverado. after replacing bank 1 and 2, I reset the it with the code reader. The check engine light went out but came back on again. Any ...

EVAP System Leak Triggers Check Engine Light | 7 Causes ...

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· The light is part of your vehicle’s onboard diagnostics (OBD) system and can indicate anything from a quick fix like a loose gas cap to a major repair like a failing catalytic converter. The purpose of the OBD system is to reduce tailpipe emissions, and your car is programmed to alert you any time the engine control computer detects that a sensor or …

Filling gas tank and pump keeps shutting off, replaced ...

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· There is a remote possibility on gas vapor lines might have this condition if the gas tank was ever removed. There are additional valves on top of the tank itself that could be stuck shut. Then if you can, when the gas tank is on vapors, carefully remove the gas tank filler neck and see if the anti splash back door is somewhat jamb shut at the base of the gas tank filler tube.

Changed MAF about 2 weeks ago, light still on ...

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· the check engine light came on a little bit ago and we got it tested and it was the mass air flow sensor, we recently about 2 weeks ago changed it but the engine light remains on and i know its supposed to take a minute to go out but its been longer now, also every time i get gas (it did this before i changed the MAF as well and was a result of needing to change it) and i turn the car back on ...

P0452 Chevrolet Code Fuel Tank Pressure Sensor Circuit ...

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The information supplied by the fuel tank pressure sensor to the Engine Control Module is used in order to detect vacuum decay or an excessive vacuum during the EVAP diagnostic routine. The fuel tank pressure sensor signal voltage to VCM varies from a minimum of about volts with pressure in the fuel tnk to greater than volts with high vacuum in fuel tank.

HELP! 2003 Silverado engine starts and immediately dies ...

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· I have a 2003 Silverado 1500 with 76,759 miles that my son drives. A couple of weeks ago it started this problem. It will start, but dies immediately. The things I''ve done to it so far is: 1) Bought a new fuel filter, 2) But first I put a new …

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