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2005 Pontiac Bonneville Question: The check engine light comes on, it might be the fuel cap not sealing tight.



, 3.8L V6, Hancock, MI, August 15, 2012, 20:24

I was told that rust where the gas cap screws on will cause a sensor to trip and turn the check engine light on. Will sanding the rust help by making better contacy?

2 Answers
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  • Answer #1

    August 16, 2012, 09:24

    You can try cleaning off the rust and replacing the cap. But be very careful not to allow any debris to fall into tank when cleaning the rust.

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  • Answer #2

    Greg's Orange Auto (15380 Answers) , Orange, CA - (714) 361-9386
    globalhelper August 16, 2012, 09:26

    could be several issues but if there is a seal issue with cap that needs to addressed 1st

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