i have a 1993 firebird lt1 it stumbles when i hit the gas i changed the spark plugs wires cap and rotor the fuel filter was clogged once it gets pass the stumbles it runs good

Gregg Hensley

Asked by Gregg Feb 09, 2013 at 07:52 PM about the 1993 Pontiac Firebird Formula

Question type: General

2 Answers



Samuel Moore

1. Is it throwing a Service Engine Soon/Check Engine Light (SES or CEL)? If it is, you can jump two pins on the OBD1 connector to make the light flash a certain number of times to tell you the code. 2. When does it stumble? At a certain speed or a certain rpm range? 3. How is the idle when you start it up and again when you come to a complete stop?

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