Re: Hunting Idle.......... - Saab 900 Bulletin Board - Saabnet.com
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Re: Hunting Idle..........
Posted by gorper (more from gorper) on Tue, 9 Sep 2003 21:57:51
In Reply to: Hunting Idle.........., S-Works, Tue, 9 Sep 2003 16:58:44
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before you go ahead & replace the o2 sensor, rule out more common culprits.
if the hunting happens all of the time, first inspect all of the turbo plumbing for cracks. remove vac line to bypass valve and blow into it/suck on it - should hold pressure and vacuum.
next, start car, take screwdriver and rap handle on AIC; if idle changes or smooths out, you've found your culprit. remove it and clean with brake cleaner or the like. if problem continues after cleaning, you'll need a new one (a bit over a hundred bucks).
if the idle is a problem only on warm-up, then suspect the air mass meter. swap in a known-good unit to test; be sure to use one with the same last 3 digits in p/n.
posted by 216.160.99...
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