1989 firebird with a 350.

Asked by Nov 18, 2016 at 03:21 PM about the 1989 Pontiac Firebird STD

Question type: General

Runs rough when it runs for a few
minutes.changed all relays and intake manafold
gaskets and most sensors.what do i do now?

4 Answers

105,545

faulty IAC and replace the fuel filter as well..

2 of 2 people found this helpful.
68,595

Is the check engine or service engine soon light on? -Jim

1,205

check all your plug wires for the right firing order & if they are on good?

1 of 1 people found this helpful.
69,655

New spark plugs?

1 of 1 people found this helpful.

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