It may be just me, but I sure consider half a rebuild false economics on a ten year old trans.

I also would consider it to be more like a 65% rebuild and would charge accordingly if someone could convince me to do such an inappropriate operation. That 65% number reflects the fact that the labor to R&R the trans is 33% of the whole rebuild job.

The most common reason for shift timing issues is a greater quantity of fluid required due to thinner clutches (causing greater pressure plate movement)and the loss of fill rate due to leaking worn clutch and servo seals. They were all built at the same time and have had the same life!

Since a rebuild could be the answer I'd sure see how much improvement a higher modulator pressure could creat.

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Steve Brotherton
Continental Imports
Gainesville FL
Bosch Master, ASE Master, L1
33 years MB technician