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 09-09-2003, 09:06 PM
Registered User
Join Date: May 2003
Location: Atlanta
Posts: 398
Fault Code 26 - Now what? (PICT!)

I have a CE light due to an code 26 error. I understand it means an upshift delay switch problem, that is probably vaccume related. Here is a pict of some lines behind the master cylinder. What do I do/check? BTW the car is shifting fine. I have experienced no problems as of yet.

Here is the PICT NOTE: its kinda big

BTW I've got a '94 E420.
Reply With Quote
Old 09-10-2003, 08:12 AM
Join Date: Mar 1999
Location: Tucker, Ga USA
Posts: 12,153
Code 26 on that car means that the transmission didn't stay in gear long enough in the morning to properly warm-up the catalytic converter. There is a vacuum element on the trans control pressure cable that controls that delayed shift in the morning.
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 09-10-2003, 02:50 PM
Join Date: Dec 2001
Location: Southern California, U.S.A.
Posts: 8,503
There is a tremendous amount in the archives on this issue that show you how to troubleshoot this issue.

Play with the search function and you should be able to find a lot of information.

My local MB mechanic tells me that 90% of the time, and upshift delay valve code is usually caused by a vacum leak in the upshift delay valve, located on the side on the transmission.
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".
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 04:48 PM.

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