1986 735i autotransmission not shifting into low gears
I'm new to the forum. I just signed up in hopes to get my 86 735i running for the summer again.
I took the 735i off the road before winter and it has been sitting under a tarp through-out the winter.
The problem I am having is that the transmission will only shift into 3rd when I have the auto shifter in D.
When I selece 1st, 2nd, it does not down shift. But the gears are displaying on the dash as 1, 2, 3, D, N, R when I select them with the auto shifter.
I have checked the wiring, it is ok.
I have manually hooked up the VIO (Violet) wire to + and tested the sylenoids, they all click. Seems like they're working.
I have changed out the T.C.U. (Transmission Control Unit) and it has not changed anything.
I have also changed the shifter switch and shift mode switch.
I am strugging with this and hoping it is nothing severe such as the Transmission needing a rebuild. But if it comes down to it, I may replace it if the Transmission is the problem.
If anyone has any info about this problem, I would greatly appreciate it very much as I have worked for several days scratching my head and have not found the problem.
PM, or E Mail please!