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10-16-2017, 11:46 AM
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#1 | ||||
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Junior Member
 Join Date: Jun 2008
Location: Seattle Area
Posts: 23
1997 SL1
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Weird High Idle issue
Sometimes when I put my warm Saturn into Park the engine RPM's will jump to around 2200-2300, then slowly drop down to normal. Please understand that this does NOT repeat, that is it is not a continual surging issue, that is it does not sit there and go up and down, up and down, etc. Runs like a swiss watch otherwise. Any ideas?
97 SL1 216K Auto, AC, PS, Cruise
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10-16-2017, 11:51 AM
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#2 | ||||
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Master Member
 
Join Date: Apr 2010
Location: Beautiful Blue Ridge Mountains of Bedford, Virginia
Posts: 2,511
2001 SL1
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Re: Weird High Idle issue
I would suspect the IAC (idle air control) might need cleaning....and while you are in that area, clean the TPS and Throttle body just for good measure.
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10-19-2017, 03:15 PM
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#3 | ||||
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Junior Member
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Re: Weird High Idle issue
I just went through this. Replacing the Throttle Position Sensor fixed it for me.
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