When I fill my tank up the check engine light comes on. When the tank gets to less then half full the light goes off; this happened once. Other times it stays on. I check the cap and its on tight. Could it be the type of gas? The car runs fine. Is this serious?
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Tuesday, November 9th, 2010 AT 6:16 PM
1 Reply
RASMATAZ
MECHANIC
75,992 POSTS
Have the computer scanned for code/s-you have a problem within the engine management system that caused the CEL to turn on-This is your starting point of diagnosis, finding out what's going on.