hesitant idle speed - TCCoA Forums
 
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post #1 of 2 (permalink) Old 07-03-2003, 11:03 AM Thread Starter
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hesitant idle speed

I have a 96 XR-7 that has been having lots of problems lately with the fuel delivery system (i think), and twice the auto shop has been little to no help. When the car is sitting at red light, the engine doesn't seem to get a rich enough fuel-air mixture. The oil gage bounces real low and if I don't blip the gas pedal occasionally, the engine stalls out. Revving the engine seems to cure the problem (Idle speed too low?). I am inclined to think that something must be wrong with either the injectors or the fuel pump. I'm also not rulely out a possible problem with the transmission because in regular driving, the engine hangs on higher revs when downshifting before dropping revs.
Does anyone have any suggestions as to what I should check out/fix?
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post #2 of 2 (permalink) Old 07-03-2003, 12:11 PM
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It may be time to clean the MAF (Mass Air Flow) sensor, replace the IAC (Idle Air Control) valve, and replace the oil sender unit.

I've experience somewhat similar problems: I solved idle problems by replacing the IAC and clean the MAF. The oil pressure fluctuation was corrected by replacing the sender.

Also, welcome to the forums!
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