Question about 1995 Pontiac Firebird

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1995 pontiac firebird formula v8 idle

How can I adjust the idle? The car runs fine, just seems to idle about 1 or 2 hundered rpms too slow. thanks

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  • ace907 Oct 16, 2008

    It is about 600 rpm. I just wanted to know how to adjust it. I have lots of experience with carburators but not much with fuel injection, electronic controls, chips , etc.

  • gearbanger55 May 11, 2010

    what is the idle speed should be about 600 rpms

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The idle speed is not adjustable, it is computer (PCM) controlled, you can turn the screw for the hard stop, but the computer will just over ride that adjustment for the most part, what I think you may need to do is clean the throttle valve and the idle speed control air bypass valve, use carb spray, spray it in the intake with the engine running use the at least 1/2 the can, the engine will try to stall, keep it running, after you are done disconnect the battery for 10 minutes, reconnect and drive a few days so the computer (PCM) can relearn your driving habits and set the idle correctly based on your driving.

Posted on Oct 16, 2008

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