Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help

Go Back   PeachParts Mercedes ShopForum > Technical Information and Support > Tech Help

LinkBack Thread Tools Display Modes
Old 02-26-2003, 11:24 AM
Posts: n/a
Unhappy 400E cooling

I have recently purchased a 92 400E with 160.000 miles. My latest problem is running hot while in traffic. Moving down the road it stays at normal temp but when I get stopped the temp raises slowly. If I put the car in neutral and rev the engine, it cools back down. What would be the most likley cause of this?? It appears that the water pump and thermostat have been changed at some time in the past. I have no service records for this car. Appreciate any help you can give. Thanks.....
Reply With Quote
Old 02-26-2003, 11:43 AM
94 E320
Join Date: Jun 2001
Location: Fairfax, VA
Posts: 437
do a search....plenty of info

when u say its hot what temp do u see?

normally mine in around the 80 summer if stop & go doesn't get higher than 90 or a little above
Reply With Quote
Old 02-26-2003, 12:28 PM
Posts: n/a
goes well above 110. I have to rev the engine at this point to cool it down.
Reply With Quote
Old 02-26-2003, 01:38 PM
aldedmon's Avatar
Senior Member
Join Date: Mar 2001
Location: Houston
Posts: 809
A few things to check

If it were me, I'd change out the Thermostat and flush and refill the coolant system adding Redline water Wetter.(available at Pep Boys). You say you rev the engine and the temp goes down. Revving the engine spins the Water Pump faster, circulates the water faster and causes the Fan/Clutch assy to suck more air over the radiator vanes. But the Fan/Clutch assy is not primarily what cools the radiator, its the wind blowing through it as the car is being driven. Since the over heating only occurs while being stationary, it doesn't sound like the pump/clutch. Radiator could be clogged due to a poorly maintained cooling system. But really. I'd be looking at the Auxillary cooling fan, as it should be kicking on as the engine temp raises past a critcal value 80 degrees or so

Reply With Quote
Old 02-26-2003, 03:39 PM
Posts: n/a
I had a problem like your with a 560 sec and I replaced the thermostat the radiator, the fan clutch etc. and did not make much of a difference until the water pump was replaced. But make sure your auxiliary fans are working.
Reply With Quote


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

All times are GMT -4. The time now is 10:11 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page