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Driving back from a two hour holiday trip my '94 Bird (120000 auto, 3.4) beagn revving about 5/7 hundred rpm higher then it should. At first I thought I had blown the tranny's overdrive but then noticed it appeared to be running higher in all RPM ranges, including parked and at idle (at idle it is at about 1000-1100 rpm. TO wiped to serch aorund right now, but any ideas as to what to check out tomorrow am would be appreciated. Thanks! And Happy Holidays!
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Replace your Idle Air Control (IAC) sensor. Autozone has them for about $30. My idle was screwey once and the IAC was the culprit.sigpic -
Really high idle could be caused by a vacuum leak. But if it's idling now at 1-1.1k it's not that bad. Clean out your throttle body, if you've never done it it's probably all gummed up.1994 Firebird 3.4<br />15.65 @ 86.8<br /><a href=\"http://www.funkz.net/firebird.htm\" target=\"_blank\">funkz.net/firebird</a><br /><a href=\"http://mywebpages.comcast.net/funkz/timeslips.htm\" target=\"_blank\">Timeslips</a>Comment
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IAC sensor (Idle Air Control sensor), maybe vacuum leak like FunkZ said, or could be the TPS sensor (Throttle Position sensor) which would also make it rev high.
Good luck [img]smile.gif[/img]---Niño---<br /><i>95\' silver 5 spd</i>Comment
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I would agree that a constant high idle is probably IAC related, that has happened to me too. But I'd also check for vacuum leaks before buying a new IAC.2002 Silver Firebird A4<br />T-Tops, Leather, Y87, W68, Chrome Wheels<br />Bone StockComment
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