check engine light problems?

Asked by May 05, 2014 at 04:49 PM about the 1985 Pontiac Fiero GT

Question type: Maintenance & Repair

check engine light has burnt out twice in last six months and has not been driven that
much.

1 Answer

265

I've heard from a mechanic that the amount of ethanol in gasoline today will cause your oxygen sensor to malfunction. This is why your check engine light keeps coming on.

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