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Old 01-06-2002, 03:56 PM
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Question Engine Idling changed while driving - '86 420 SEL

The idling of my car increased while driving but changes to normal after few minutes of driving. Any you think I just need a tune up?
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Old 01-06-2002, 11:41 PM
MikeTangas's Avatar
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Join Date: Apr 2000
Location: So. Cal
Posts: 4,430
Just taking a guess here, but did the ABS light come on at the same time (your other post) as the idle prob?? I'd be taking a look a the OVP, check the 10amp fuse on top. Might need to replace the OVP also.

You should be able to find the OVP on the firewall 6-8 inches from the fuse box, Silver module with a red top and clear plastic flip top.
Mike Tangas
'73 280SEL 4.5 (9/72)- RIP
Only 8,173 units built from 5/71 thru 11/72

'02 CLK320 Cabriolet - wifey's mid-life crisis

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Old 01-07-2002, 06:19 AM
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Thumbs up

You are exactly correct Mike, the ABS light come on at the same time as the idling problem came. I'll do what you sugested. Thanks.
btw. what is the meaning of OVP?
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Old 01-07-2002, 06:49 AM
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Join Date: Jul 2000
Location: Toronto, CANADA
Posts: 1,193
OVP is over voltage protection.
Jason Priest
1999 E430
1995 E420 - retired
1986 420SEL - retired
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