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-   Grand Marquis (https://www.mercuryforum.com/forum/grand-marquis-14/)
-   -   Check Engine light (https://www.mercuryforum.com/forum/grand-marquis-14/check-engine-light-5009/)

sundance 08-30-2010 09:55 AM

Check Engine light
 
Greetings all. New member.
I just last week did a plug and boot change on my 02 GS. It's running great but this morning woke up with the check engine light on. I took it by the local AZ for a code read out which said "defective or loose gas cap." I bought a new one and of course that was not the problem. I double checked all the connections, vacuum, etc., with no results. As I said, running great. Any ideas would be appreciated.

thanks, bil

carlinjohn 09-10-2010 01:03 AM

I think may be there are some wires loose.Do check once and get them fixed.


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