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Old 11-10-2017, 03:10 PM   #2
toggenburg
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Join Date: Apr 2010
Location: Beautiful Blue Ridge Mountains of Bedford, Virginia
Posts: 2,312

2001 SL1
Default Re: Elusive high idle issue - 2001 SL1

Anyone check for valve cover seal issues?
With engine idling, using a spray can of brake cleaner, or the like, spray along the entire outer rim of the valve cover. If there is a vacuum leak, the idle will SOAR....then calm down a bit until resprayed. If so, it would mean a simple gasket replacement job.

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