Question about 2001 GMC Safari

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Slight perg leak changed gas cap check engine light came back on

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Take it to auto zone they will run a scan on the car for free parts will cost you

Posted on Mar 21, 2011

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1 Answer

Check engine light/evap leak


Getting a smoke test is the right direction to go in.
The computer vents the gas tank to the vapor canister while the engine is running. It also pressure tests the system for leaks. Some where between the gas tank and the vapor canister there may be a leaking hose or valve. Or it could be the gasket on top of the tank where the pump assembly went in.
The gas cap could have been a source for the leak, the other things are not involved.

Apr 24, 2013 | Oldsmobile Cars & Trucks

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A strong gasoline smell but no appearent leak, what can be the cause?


fuel systems have a vent or a purge solinoid which will purge the fumes back to the tank which can in some cases send excess fumes to the vent
check to make sure you have a good gas cap and the perge is working

Mar 04, 2010 | 1999 GMC Jimmy

1 Answer

Engine light keeps coming on. report say faulty gas cap. changed 4 times. problem not solved. recent tune up. 100km ago.


Check clamps on filler hose and vent hose make sure it's not leaking there.If fuel pump was changed before filler tube connection on tank maybe leeking when under vacumme from perge systme and setting code.

Feb 04, 2010 | 2003 Dodge Ram Maxi

1 Answer

2006 Saturn Relay Check Engine Light


PO455 is a large evaporative fuel leak. A bad fuel cap is ONE of the things that COULD be the problem. Fuel system cleaning only lightened your wallet. Reading your post is confusing. Did all this start AFTER the Valvoline Wallet Flushing? If so , they left something loose or disconnected. I would find a qualified repair shop to fix the problem, and if it has anything to do with what Valvoline did, make them pay the bill.

Nov 12, 2009 | 2006 Saturn Relay

2 Answers

2005 check engine light comes on. had advanced


If the light is out, no worries. if it comes back on and the cap is tight, there may be other problems and a qualified repair shop will need to diagnose that for you. It may have a Evaporative Emission Leak.

Nov 10, 2009 | Chevrolet Cavalier Cars & Trucks

2 Answers

2008 kia optima LX Check Engine Light


P0442 EVAP Leak Monitor .040 Leak Detected (Medium Leak)

P0456 EVAP Leak Monitor .020 Leak Detected

replace your gas cap and clear codes, then wait and see if light comes back on, if it does you have a more serious problem like a fuel tank leak or a defective fuel tank pressure sensor.

Sep 16, 2009 | 2008 Kia Optima

4 Answers

P0442 check engine light code


The computer that read the code for you can also reset it.  If you don't have one, you can go to your local auto parts store and have them reset it for you.  This is what your code means P0442 Evaporative Emission Control System Leak Detected (small leak).  This is what Causes it and possible fixes: CausesA code P0442 most likely means one or more of the following has happened:
  • A loose or improperly affixed gas cap
  • A non-conforming gas cap (i.e. not factory/original brand)
  • A small leak/hole in a fuel vapor hose/tube
  • Other small leak in EVAP system
  • Faulty vent o-ring seal
Possible SolutionsWith a P0442, the most common repair is to:
  • Remove and reinstall the gas cap, clear the codes, and drive for a day and see if the codes come back.
  • Otherwise, replace the gas cap, or
  • Inspect the EVAP system for cuts/holes in tubes/hoses

May 21, 2009 | 2005 Kia Sorento

2 Answers

Kia Rio Check Engine Light


check the fuel line hose near the fuel regulator for wear as they tend to leak or corrode causing a gas smell inside the car. My 2000 Kia Sportage just had the same problem with the gas smell inside the car.

Dec 11, 2008 | 2002 Kia Rio

1 Answer

Fill up with gas


i had the same problem, you have to change the perge control valve, its on the back of the engine below where the plastic intake pipe meets the metal intake manifold on the back side of the engine between the engine block and the firewall, on the underside of your car hood you will see a vacume system diagram, it will illistrate where the valve is, it should cost about 30 bucks or so at a hyundai dealership

Oct 13, 2008 | 2001 Hyundai Elantra

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