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Miss at idle
Posted by Marty [Email] (more from Marty) on Wed, 11 Jul 2007 17:39:58
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My 97 aero is lumpy at idle, most noticeably with the a/c on. Its fine about 1200rpm and up. Its got a new downpipe o2 sensor, DI, and plugs. CEL code is p0300- random multiple misfire. When i pull the plugs the electrode is fine but the bottom of the threaded area is all fouled and black making me think its not the plugs fouled but that it is running rich. I can't really think of something that would make it run rich, Maybe a bad CPS that makes the ecu think its at a higher rpm than it is. Sometimes it idles like it has a vacuum leak(revs to about 1700 by its self maybe thats the idle control trying to smooth things out?) Does this sound like anything?
posted by 68.9.2...
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- Miss at idle, Marty, Wed, 11 Jul 2007 17:39:58 <-- Viewing This Message
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