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Old 09-10-2002, 10:26 PM
suginami suginami is offline
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Join Date: Dec 2001
Location: Southern California, U.S.A.
Posts: 8,508
This seems to be a very common fault code on 93-95 W124's with the M104 engine.

The upshift delay valve is on the firewall behind the master cylinder. It has a black electrical wire and a green vacuum line going to it that connects to the transmission.

The part is cheap, less than $30, if I remember correctly.

You can replace the part and make sure the vacuum line isn't plugged up.
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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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