2004 Chevrolet Cavalier Logo
Posted on Apr 18, 2011
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Feul will burp mout of the filler cap no mater how slow I fill the car and the service engine soon light is on, how do I change the feul tank filler vent check valve?

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Jeffrey Turcotte

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  • Chevrolet Master 8,991 Answers
  • Posted on Apr 18, 2011
Jeffrey Turcotte
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Joined: Aug 22, 2010
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Hi, your EVAP vent valve is likely stuck closed. The valve is under the car near the fuel tank. Remove the valve and check to see if it's stuck. You may be able to restore operation by cleaning the valve with carb cleaner. The valve should be open when no voltage is applied. I have pasted instructions below from autozone.com. Please let me know if you have any questions, and thanks for using FixYa.
feul will burp mout of - jturcotte_1546.gif Vent Solenoid Valve
2.2L & 2.4L Engines

  1. Raise the vehicle
  2. Loosen the EVAP canister vent valve hose clamp and slide the clamp down the hose away from the EVAP vent valve hose connection.
  3. Remove the hose from the EVAP canister vent valve.
  4. Remove the EVAP canister vent valve by placing a pry bar between the valve and mounting surface, and moving the valve forward.
  5. Remove the clip from the EVAP canister vent valve harness connector
  6. Disconnect the EVAP canister vent valve harness connector.

To install:
  1. Connect the EVAP canister vent valve harness connector
  2. Install the clip into the EVAP canister vent valve harness connector.
  3. Install the EVAP canister vent valve by pushing the mounts into the original holes.
  4. Lubricate the hose end with lubricant.
  5. Install the hose to the EVAP canister vent valve.
  6. Slide the EVAP canister vent valve hose clamp down on to the hose connection at the EVAP canister vent valve.
  7. Lower the vehicle.

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Service engine Soon Light On.Code Reads PO455. What is next?

Possible causes - Missing or loose fuel cap
- Incorrect fuel filler cap used
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I HAVE CODE 0440 MY SERVICE SOON LIGHT ON I FIX FUEL CUP BUT STILL ON LIGHT WHAT TO DO

P0440 - Evaporative Emission Control System Malfunction
Possible causes- Missing or loose fuel cap
- Incorrect fuel filler cap used
- Fuel filler cap remains open or fails to close
- Foreign matter caught in fuel filler cap
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What is code PO496 and PO455 for a 2007 Pontiac Grand Prix mean

P0496 is not alisted code.
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P0440

Hello
There are a number of things that casue this fault code, here is some info on what the problem might be.

440 - Evaporative Emission Control System Malfunction
Symptoms - Engine Light ON (or Service Engine Soon Warning Light)
- Possible a noticeable fuel odor caused by the release of fuel vapors.
Possible causes - Missing or loose fuel cap (most common)
- Incorrect fuel filler cap used
- Fuel filler cap remains open or fails to close
- Foreign matter caught in fuel filler cap
- EVAP canister or fuel tank leaks
- EVAP system hose leaking
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The check engine light came on & I went to autozone & they said the code was P0441 - EVAP emission control system purge flow fault, the woman said she had never seen that & that I should call...

This code does cause any dangerous condition, read what it means below plus possiable solutions.

P0441 - Evaporative Emission Control System Incorrect Purge Flow


Symptoms - Engine Light ON (or Service Engine Soon Warning Light)
- Possible a noticeable fuel odor caused by the release of fuel vapors Possible causes - Missing Fuel cap
- Incorrect fuel filler cap used
- Fuel filler cap remains open or fails to close
- Foreign matter caught in fuel filler cap
- Incorrect fuel tank vacuum relief valve
- Leak is in vacuum line between intake manifold and purge control valve. Possible solution - Retight or replaced fuel tank filler cap
- Replaced damage or leaking EVAP canister
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After filling the gas tank on my 2001 Cadillac Seville STS, the "check engine soon" light came on. I took the gas cap off and re-tightened it. The light is still on.

The fact that the light came on has nothing to do with filling your tank. The light is pre-programmed to come on following a combination of time, mileage and on some makes the usage profile, and it's telling you to get the engine serviced soon. After the service, the vehicle will need to be connected to a suitably-equipped computer to have the service light indicator reset. If you check in your Cadillac owners' handbook, the service section will give you details of which service items need to be attended to at the age and mileage of your vehicle. If it's just a simple oil and filters service then you may decide that you can do this yourself easily and save money. If there's more to the job, you can decide what you're comfortable doing yourself and then get a garage to do the rest: the less you leave to the garage, the lower the bill.

Ignoring the light will simply mean that your engine eventually has a breakdown which can be extremely expensive.
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2002 chevy cavalier p0440 and service light is on

that is fuel tank evap related code.
It can be caused by simply removing the gas cap while the engine is running.
Dont get too concerned with this code if you think you may have opened the cap while car was running, the computer will soon turn the light off if all is well.
Other things Like ta cracked or faulty gas cap, The evap purge canister or hoses loose or cracked, filler neck hoses loose or cracked ,damaged orings on evap sensor. could also cause this code.
They often use a special smoke machine to diagnose leaks in the tank and evap system.
The special machine fills tank with smoke at 2 psi making it posible to spot leaks.
Hope this helps.
If it does dont forget to leave a comment.
(:DK
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"Service enging soon" light stays on....

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