Thread: Idle problem on 1990 560 SEL!
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Old 01-18-2005, 09:24 PM
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Cigar Havana Cigar Havana is offline
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Join Date: Jan 2003
Location: London Ontario Canada
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High Idle Fixed
I fixed my high idle by replacing the idle control valve. This is on a 1989 420 SEL. I did test the old one, and it did increase the RPM when it was unplugged.
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1989 420 SEL
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