I just bought this 92 firebird and it seems to be having problems with idling up and down only when u turn on the heater, air conditioner.. ive had the iding arm cleaned already, changed all spark plugs and wires..can u please give me any suggestions? thanku

 

check air filter, fuel filter, fuel preasure and volumn, scan for codes, broke vacumn line, check timing, cap and rotor. some are a long shot, but basically you need to check the tune up and make sure it's good and go from there.

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-=ICON MOTORSPORTS=-
1st & 3rd

 

thanku for your time.i will do what u have suggested.