It used to be the other way around; at stoplights the idle would hunt and miss so badly that I would put it in neutral to get it to stop. Now, it's ok in drive, but once I park or put her in neutral the idle starts hunting and there is this odd miss. Anyone know what I can check?

Thanks,
Brandon

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White '92 Firebird w/ 305 TBI. Open element w/ non drop base, increased fuel pressure, TBI spacer, Hedman Hedders & y-pipe, no cat, cat-back exhaust

 

btt

 

The computer's supposed to lower the idle when the car's shifted into neutral or park. It raises it back up when the car's put into drive or reverse just so the motor doesn't stall.

Does your car idle lower in park/neutral than in drive/reverse?


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-Tom P (Hot rodded 1986 Firebird 2.8l) from http://www.f-body.net/mailbag/3rd/3rd_mailbag.html message boards

 

No, the idle is a little bit higher in park, but not by more than 50 rpms.