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#1
09-09-2003, 09:06 PM
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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. 
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#2
09-10-2003, 08:12 AM
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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
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#3
09-10-2003, 02:50 PM
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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".
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