Help, C36 stumbling after 1-2 shift
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Joined: Dec 2001
Posts: 36
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From: Philippines
95 C36 AMG, 02 SLK320, 06 Accord V6, 08 BMW 335i
Help, C36 stumbling after 1-2 shift
Gentlemen, My 1995 C36 recently had its defective engine wiring harness replaced by an indy. Everything seemed fine until a couple of days later when I had a chance to do some italian tuning.
Whereas before, my 1-2 shifts at WOT were firm, crisp and the RPM climb uninterrupted, now the engine RPM drops immediately upon the 1-2 shift, hesitates for about 1 second, then resumes its climb up the power band. Disconcerting to say the least. 2-3 shift is unaffected so far.
My mechanic is sure he connected the new wiring harness corrrectly, and no other changes were made to the car at the time.
Perhaps some fellow members can help me diagnose this?
Many thanks
Bong
Whereas before, my 1-2 shifts at WOT were firm, crisp and the RPM climb uninterrupted, now the engine RPM drops immediately upon the 1-2 shift, hesitates for about 1 second, then resumes its climb up the power band. Disconcerting to say the least. 2-3 shift is unaffected so far.
My mechanic is sure he connected the new wiring harness corrrectly, and no other changes were made to the car at the time.
Perhaps some fellow members can help me diagnose this?
Many thanks
Bong
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Joined: Mar 2002
Posts: 72
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From: Newport Beach, CA
1995 C280 & 2002 CLK320 Cabrio
DOesn't sound like an engine problem...
I'm fairly convinced that this stumbling between shifts is a problem with the transmission.
My guess? I'd say the indy accidently maybe knocked off a vacuum line to the transmission when he installed the new wiring harness. I am not a technician, so I cannot say for sure... but I'd have the the vacuum tested in the transmission... and have all of the lines and connections to the trans checked out.
You can try www.transonline.com, this might lead you somewhere. They have the transmission for our car... it is the 722.4 for MB.
Good luck!
I'm fairly convinced that this stumbling between shifts is a problem with the transmission.
My guess? I'd say the indy accidently maybe knocked off a vacuum line to the transmission when he installed the new wiring harness. I am not a technician, so I cannot say for sure... but I'd have the the vacuum tested in the transmission... and have all of the lines and connections to the trans checked out.
You can try www.transonline.com, this might lead you somewhere. They have the transmission for our car... it is the 722.4 for MB.
Good luck!
