1991 Pontiac Trans Am idle problem

1991 PONTIAC TRANS AM
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JOE.MORENO
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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?
Jul 12, 2010 at 2:12 AM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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