Quote:
Originally Posted by 417 Motorsports
well??? r we back on the road?
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Yes...thanks for asking. Turned out the problem all along was a bad speedo unit. It is a autometer gauge. The gauge appeared to be working fine. However, when you watched the scanner the speed over about 40 mph was all scrambled. So, the trans didn't know how to shift and that explains why it tried to shift down for no reason at 70 or 80 and would not go to lock up.
Anyway, unplugged the speedo and all is well. I called Autometer and they said it is a known problem. The gauge more or less sucks all the signal and starves the PCM.
I'm going to ship it back to them.
In the end, I didn't need a rebuild anyway...AND the first rebuild was defective when it lost all but manual low and reverse. The shop made good on that.