A 3 speed has D, 2,1
4 speed has D, 3, 2 - no 1. Box will start in 1st, then upshift to second.
At least that is what i have seen on my 81, 84S and 86(S3)
Slip can be for many reasons, not all difficult to fix, first test is to check that the vacuum modulator is holding vacuum, easy to verify. call me if you want to know how to test.
Quote:
Originally Posted by MPDano
He said it slips, but I didn't notice it as my test was short. They topped off the reservoir but didn't change the fluid and filter.
Shift numbers say 2 3 D
Where is 1st and is this a 3 or 4 speed?
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