Question about 2005 Pontiac Grand Prix
Check engine light stays on. Disconncted battery, stays off for a little while then comes back on. replaced gas cap also.
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Posted on Jan 02, 2017
Did u have engine codes scanned? If not, have it done, as it may indicate the problem. Let me know. (most parts stores will scan for codes free) .
Posted on Mar 21, 2009
Check the interior seal inside the gas cap--could be damaged or collapsed. Replace cap if damaged. Try clearing fault code by disconnecting one battery terminal for little while, then reconnect. This clears the fault memory in the computer. The other way is to have the code read and cleared with a reader.
Posted on Jul 12, 2009
you probably have a problem in the evap emissions system and a superficial engine diagnostic @ a shop will likely confirm this. a loose gas cap is the most common cause for this, so it tells you to check it first in an attempt to save you a trip to the shop. if the cap is new and tightened past 3 clicks, then the problem lies somewhere else in that system. there are many parts in that system, so it probably would be best left to a shop to figure out exactly what the cause is.
Posted on Oct 01, 2009
SOURCE: my gas cap 2005 grand prix
If the cap was tight. It could be a different leak. Drive a few days. If the light doesnt go out, a Garage will need to check it for you, there may be more to it, like an evaporative leak.
Posted on Nov 05, 2009
Hi, are you saying the trouble code is P0455, or have you not scanned the car? If you have not scanned the car, please get a free scan at you local parts chain and send us the codes.
If you have P0455, check the EVAP hose from the fuel tank to the charcoal cannister for leaks. Inspect the cannister and the hose to the purge valve. Make sure the purge valve is not stuck open.
Let me know if you have questions, and thanks for using FixYa.
Posted on Jan 21, 2011
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