'94 900S - intermittent prob. w/ engine idle - Saab 900 Bulletin Board - Saabnet.com
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'94 900S - intermittent prob. w/ engine idle
Posted by Michael Davis [Email] (more from Michael Davis) on Fri, 12 Apr 2002 13:04:18
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I have a '94 900S with 72K miles (5sp, 2.3L engine), and the engine idle intermittently races at about 2500 RPM. It does this when the engine is either hot or cold, and the only way to stop it is to turn the engine off. When cold, the engine sometimes "hunts" for the correct idle setting. When hot (e.g., exiting off of the highway and coming to a stop at the first light), the engine will sometimes start racing when I engage the clutch or put the transmission in neutral. In addition, the RPMs sometimes race to ~2000-2500 when I engage the clutch while shifting between 1st and 2nd (a different problem - slipping clutch?).
My mechanic doesn't have a clue and says to wait until the problem is consistent and repeatable. Anyone have a better diagnostic technique, or perhaps a guess at the problem?
Thanks!
(Six-time owner, since 1985)
posted by 192.160.73...
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