Service Engine Soon Light problem

Asked by Apr 26, 2013 at 09:27 PM about the 1996 Pontiac Firebird Formula

Question type: Maintenance & Repair

My 96 Firebird formula has just had a complete change of the head gasket assembly and
a new catalytic converter. However, the "Service Engine Soon" light keeps coming on
even after the mechanic reset it, saying he tested the sensor and found nothing wrong
with it. When he reset the sensor and tested the engine, it was operating perfectly at all
the GM factory settings. Any possible solutions? I need to resolve this to pass a smog
test.

3 Answers

216,975

Only way we can help you is to know the code. I'd find another mechanic.

75

What code is your mechanic resetting? That would be your first clue to what's going wrong.

The mechanic is saying it is the EGR monitor that is causing the problem ; I didn't catch the code.

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