Why is my check engine light still on after changing purge valve?

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  1. In most cases, if the purge valve has been replaced and you’re still getting codes related to this component, then it’s going to be a fault caused by the sensor or wiring connected to the sensor.
  2. Depending on which code you are getting, it could be a different EVAP component causing your issue.

Thus, How do you know when you need a new purge valve? 5 Symptoms of a Bad Vapor Canister Purge Valve (and Replacement…

  1. 1) Check Engine Light.
  2. 2) Rough Idle.
  3. 3) Trouble Starting Car.
  4. 4) Poor Engine Performance.
  5. 5) Emissions Test Failure.

Additionally How many miles do you have to drive after clearing codes? So why is the light still on? Here’s something you probably don’t know: after clearing the car’s computer you will need to drive for about 50 to 100 miles. As you drive your car the computer will monitor all the sensors and register the results.

How long does it take for the check engine light to go off after replacing the o2 sensor? You may think that there is still a problem with the car after the repair, but it’s because the light needs time to reset. The car’s internal computer only resets after a set period where it checks all of its sensors once more. The reset can happen automatically after around 10 to 20 cycles.

How long does it take for a car computer to reset? The readiness monitors will remain until the car has been driven long enough for the computer to evaluate the various system and sensors. The amount of time can vary based on the vehicle. In some cases it can take up to 100 miles for all of the computer monitors to completely reset.

How long does a purge valve last?

Although the purge valve is designed to last the life of the vehicle, that doesn’t always happen. If the purge valve fails, your car will likely exhibit one or more noticeable symptoms.

Will a purge valve make noise?

The purge valve ticking noise is most likely normal and should not be noticed inside the cab when the windows are up. If it is too loud inside the cab, then have the valve replaced. The purge valve may be leaking vapor by it and into the engine when you are refueling.

How do you test a purge valve?

How do you tell if your purge valve is messed up?

On top of a rough idle, a vehicle with a failing EVAP canister purge valve will display signs of poor engine performance. The engine may feel like its running “weak” and won’t generate sufficient power for acceleration. Accelerating will feel like you’re pressing the pedal down and moving slower.

Will a bad purge valve throw a code?

If your car’s computer detects higher or lower than expected purging from the valve, it will illuminate the check engine light. Common error codes include P0441 and P0446, as well as other EVAP codes.

Why is my Check Engine light still on after changing purge valve?

In most cases, if the purge valve has been replaced and you’re still getting codes related to this component, then it’s going to be a fault caused by the sensor or wiring connected to the sensor. Depending on which code you are getting, it could be a different EVAP component causing your issue.

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