Pontiac Sunfire Problem Report
Pontiac Sunfire Check Engine Light Due to Gas Cap Issue
Illumination of the Check Engine Light can be caused by a loose or worn gas cap.
check engine light on but says evap code - Visitor
got new cap - Visitor
check engine light comes on, cause, fuel cap - davidsyth
check engine light on and replaced cap waiting to see the light go off hopefully soon - Visitor
Engine light came on. Turned out the cause was the gas cap not being securely tightened. You have to hear clicks to be sure it's tight. My cap was very dirty. Cleaned it and it was fine but soon replaced it. - Visitor
I can always tell when someone other than myself has messed with the gas tank lid....either its coiled up all wrong or i ge the check engine light...I then make sure during my next stop to undo the cap and retighten it, making sure it clicks at least 2-3 times. Usually, the check engine light will then go off after a couple of restars after the cap has been retightened. - Pinkybling
My check engine light was on so i went to mechanic and it was diagnosed as it being the gas cap. replaced gas cap-problem solved! ;) - TABOOSTAR
Purchased new gas cap. - Visitor
I change the gas cap, fix, tighten fix, but continuos appearing, I continue resetting the code...
The ignition module or an ignition coil may fail causing an engine misfire, the Check Engine Li...
I ran out of gas and the engine light went on i replaced the cap like i was told and it is stil...
I was filling up my car with gas and saw a very small amount of gas leaking on the ground. I decided not to fill it up all the way (I was close to empty and only put in about $15 to get half a tan...