Parts Catalog Accessories Catalog Tech Info Tech Forums
  Search our site:    
 Cart  | Project List | Order Status | Help    

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

LinkBack Thread Tools Display Modes
Old 12-02-2002, 11:03 AM
Registered User
Join Date: May 1999
Location: Chicago, IL
Posts: 29
Balky 4matic trans when cold

I live in Chicagoland, and when my 99 E320 wagon is cold (below 40 degrees overnight) the tranny is VERY sluggish. It's painfully slow from dead start, and I have to shift "manually" for it to shift at all. Finally, it won't go into the overdrive/top gear at all until after about 10 minutes of driving. Very frustrating taking the engine to 45-4800 rpm hoping it will shift. The engine is at operating temp but the trans takes its sweet time to catch up.

Any ideas? Last year at approx 30K miles I took it to the dealer...they said nothing wrong. Now I'm taking it back at 45K miles...The problem seems worse and it's close to out of warranty...

Thanks for the help,

Todd Buckton
Reply With Quote
Old 12-02-2002, 03:37 PM
Join Date: Mar 1999
Location: Tucker, Ga USA
Posts: 12,153
Many times the transmission is reacting to the amount of torque that the engine is putting out. IF the engine isn't developing enough torque then the trans will remain in the lower gears.
Many times on the M112 like yours the air mass sensor leans out the mixture & then the engine doesn't develop enough torque.
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
Old 12-08-2002, 01:27 PM
Registered User
Join Date: May 1999
Location: Chicago, IL
Posts: 29
Thanks for the reply. She's going to the dealer tomorrow, I called them ahead of time and asked them to make sure to check the sensor.

Thanks, again,

Todd Buckton
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 Off
Trackbacks are On
Pingbacks are On
Refbacks are On

All times are GMT -4. The time now is 03:19 AM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2016, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2011 Pelican Parts - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page