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Fast Idle

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Old 04-17-2007 | 09:24 PM
steviedpeters's Avatar
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I have a 99 sl series stick shift. It is Idleing at about 3000 rpm. I've replaced my throtle position sensor and tried cleaningthe butterfly valve but have seen no improvement. Any suggestions?
 
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Old 04-18-2007 | 01:43 AM
derf's Avatar
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1) Change engine coolant temp sensor (use brass replacement) and connector (Saturn only)

2) Vacuum leak? Spray throttle body cleaner around intake manifold and throttle body. Change in RPMs = you found the leak.

 
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Old 04-18-2007 | 02:27 AM
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I agree..............................best place to start if your not taking it to the dealer.
 
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