Continued High Idle Problems on '89T - Saab 900 Bulletin Board - Saabnet.com
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Continued High Idle Problems on '89T
Posted by Mac [Email] (more from Mac) on Sun, 5 Aug 2001 23:53:45
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I need more help diagnosing a high idle problem on my '89T. Have checked everything I can think of with no joy. The car idles at about 2000 RPM. However if I disconnect the idle control valve harness, idle drops to 800 and stays there when I reconnect the harness until I shut the engine down. When I restart, idle is again 2000 RPM. Have checked for vacuum leaks, checked and replaced grommets, checked continuity on the throttle position sensor, and checked for corrosion on the wiring harness for both the sensor and the idle control valve. Does anyone have any ideas on what the problem could be? Thanks, Mac
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