1991 Pontiac Trans Am



July, 12, 2010 AT 2:12 AM

Engine Performance problem
1991 Pontiac Trans Am V8 Two Wheel Drive Automatic

I have a 1991 firebird with a 5.7 liter automatic tunned ported injected. The question I have is.
When I turned on the key there is no engine service light. When I crank the car it runs okay until it warms up once it warms up the car idle and rpms start hunting?

1 Answer



July, 12, 2010 AT 2:27 AM

Check under the hood for a fuse box, look for the cigar fuse, and any marked ign or pcm, ecm. One of these should get the service engine light back on.

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