Re: High idle Part III - Saab 9000 Bulletin Board - Saabnet.com
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Re: High idle Part III
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Posted by Ken Fisher [Email] (more from Ken Fisher) on Tue, 19 Nov 2013 14:17:07 Share Post by Email
In Reply to: High idle Part III, Tony G, Tue, 19 Nov 2013 11:30:17
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from last round:
"Of course, a failed PCV valve (wide-open) would give a small idle bump as well."

orresponds to:
"I also noticed that if I unplug the little hose from the top of the throttle body that connects to the valve cover end through a one way valve, cover the hole at the throttle body, the idle drops down to 900RPM. The arrow on the check valve is toward the throttle body and the check valve checks ok. The bigger hose that connects to the valve cover at the same point is in good condition."

Replace the PCV valve and 4mm (5/32) vacuum line, they are cracked and leaking air. Nice work finding a stuck flap inside the AIC.

posted by 173.60.44...

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