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Old 07-16-2003, 06:12 PM
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Join Date: Jul 2003
Posts: 2
'95 E420

HI everyone; I have a small problem with my '95 E420. After the engine reaches norm. op. temp. The idle fluctuates from 1k-1500rpm's down to nothing(has died on occasion)This happens only at start up.w/ a warm engine. After 30-40 sec. after the rpm's calm down and become stable it runs fine for as long as I need it to.until I turn it off and restart a couple of minutes later. It did this last summer,and not at all during the fall and winter.When this summer heated up, the problem returned.Also the engine getting too high.almost 120c in the summer and in traffic only.So if I hit traffic jams I have to turn off the a/c.What can I do to get it to run cooler,and will that take care of the idle problem.Any help would be greatly appreciated.

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Old 07-17-2003, 02:48 AM
Registered User
Join Date: Oct 2002
Location: Ojai, CA
Posts: 1
Can't help you with the idle problem, but I know there is a mod to the fan clutch that is written up in the Stu Ritter "124" Bible book that fixes the over-heating issue on the 420's. The book is awesome. If you don't already have it, it's a must-have in the collection......
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Old 07-17-2003, 08:10 AM
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wjm wjm is offline
Join Date: Dec 2000
Location: Suburban Detroit, MI
Posts: 692

You need to check your front fans and make sure they are working. Do a search on this site, as there is is a wealth of info on how to test them.

You'll see the 2 fans in front of the radiator when hood is open. If these don't work, you'll definately run hot.
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Old 07-17-2003, 01:22 PM
it leaks, its german
Join Date: Mar 2002
Location: raleigh nc
Posts: 1,111
Clean the EA out and retry it for stable idle. I've seen 'em get gummy and stick a bit.

Project Smoker, '87 603 powered wagon
Hauler, 96 CTD can you say torque?
Toy 73 Cougar xr7 convertible
Acme Automotive Inc.
Raleigh NC
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Old 07-19-2003, 01:56 AM
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Join Date: Jul 2003
Posts: 2
Thanks Guys; JoeP,sry to sound stupid but what is "EA"?
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Old 07-19-2003, 12:15 PM
Join Date: Dec 2001
Location: Southern California, U.S.A.
Posts: 8,538
Originally posted by JoeF
Thanks Guys; JoeP,sry to sound stupid but what is "EA"?
I'm going to guess that it stands for Electronic Accelerator.

Also sometimes called throttle actuator or throttle body.

Try a search for these words and see what comes up. There is a lot in the archives (if you have the time. And the patience).

Paul S.

2001 E430, Bourdeaux Red, Oyster interior.
79,200 miles.

1973 280SE 4.5, 170,000 miles. 568 Signal Red, Black MB Tex. "The Red Baron".
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