Re: high idle-(long) - Saab 900 Bulletin Board - Saabnet.com
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Re: high idle-(long)
Posted by Apolo (more from Apolo) on Fri, 28 Feb 2003 11:18:23
In Reply to: high idle-(long), dave, Thu, 27 Feb 2003 17:37:43
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You can rule out the AIC valve by squeezing the line going to the air intake part of the throttle body with a plier. It the idle goes down, you know it's the AIC valve stuck in the open position and allowing too much air to enter the intake. Having passed that you can look elsewhere. Start by checking all vacuum lines for leak off the intake manifold. You don't have a turbo so that's one less hose to check. Next, I'd make sure that the throttle plate is shut close all the way. Check your TPS switch and make sure it is responding appropriately. The last one I can think off is the evaporative canister purge valve which might be open all the way and allowing too much fuel vapor to enter the intake.
Good luck.
posted by 47.248....
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