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Old 04-19-2003, 08:11 PM
fredsegal fredsegal is offline
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Join Date: May 2001
Posts: 301
420SEL "check engine" light question


Let's see if anybody has experienced this;
In the morning I start the car, after about 10 seconds it settles into it's usual, almost smooth, idle....5 seconds later the RPM's go down to about 350 and the check engine light comes on. This happens for 1-2 seconds then back to normal.

Any guesses/informed opinions?
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