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-Benz Forum > Mercedes-Benz Tech Information and Support > Tech Help

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 08-03-2010, 07:17 PM
Registered User
 
Join Date: Jul 2010
Posts: 2
Mysterious ATF leak, coolant light on

Hi everyone--

I have a 1995 E320 with 110k miles.

About two months ago, it developed some transmission problems. First, it would only start in neutral occasionally. Then, it would have trouble in low gears--the engine would surge or have trouble up-shifting. This usually just happened when the engine was cold. I checked the ATF level, and it was low. Put about a quart and a half in (I think) and that fixed it--everything was working great for a month or so.

Then last week it developed similar problems--running roughly at low gears; at one point it totally refused to shift from first to second and was just limping along. I checked the transmission fluid again, and again--it was low. Refilled it and things are better.

So it seems pretty clear there's a leak somewhere. Only problem is I can't figure out where. No big puddles under the car, nothing in the engine compartment. Now, there is some sort of hose that runs right under the transmission, and is the lowest part of the undercarriage. This drips after I turn the car off for a little bit, but it's just water. Though occasionally when running my hand over the hose my fingers have come back red.

A possibly related issue is that my coolant light is now on. But the reservoir is at the regular level, and oil temperatures have been fine. My initial thought was that I'm leaking ATF into my radiator, but I don't see any red liquid in the coolant reservoir. I presume that the two (ATF and coolant) wouldn't mix together, and so there would be two definite layers. But I put a straw in there and just draw up nice neon green liquid.

This is really confounding, and I'd love to do the repairs myself--I just can't figure out what's wrong! Any help is appreciated. Thanks!

Reply With Quote
  #2  
Old 08-03-2010, 08:57 PM
Gilly's Avatar
Registered User
 
Join Date: Mar 2001
Location: Evansville WI
Posts: 9,616
If the failure is the trans cooler, the atf definitely will mix with coolant, the result, with the MB yellowish coolant, will loook like pepto bismol. Not sure with the green coolant, wiould look pretty weird I'm sure.
Gilly
Reply With Quote
  #3  
Old 08-04-2010, 05:19 AM
Registered User
 
Join Date: Aug 2002
Location: Southeastern PA
Posts: 3,052
MissyR2, for starters replace the green coolant with MB coolant or Zerex G-05 to prevent other problems with your engine.
__________________
Fred Hoelzle
Reply With Quote
  #4  
Old 08-04-2010, 09:16 AM
Moderator
 
Join Date: Mar 1999
Location: Tucker, Ga USA
Posts: 12,153
That transmission has a vacuum modulator & fluid can be "sucked" thru that modulator & be burned inside the engine.

__________________
MERCEDES Benz Master Guild Technician (6 TIMES)
ASE Master Technician
Mercedes Benz Star Technician (2 times)
44 years foreign automotive repair
27 Years M.B. Shop foreman (dealer)
MB technical information Specialist (15 years)
190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)
Retired Moderator
Reply With Quote
Reply

Bookmarks

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 05:28 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2020, 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