New to the Forum. Just bought a '91 with the E4OD and it wouldn't come out of 1st when I picked it up. I was hoping it was just a bad sensor but I replaced the speed sensor on the rear diff and no change. Dropped the pan and found that the previous owner had put some additives or something in with the transmission fluid. Also found excessive amount of shavings on the magnet. Tore the tranny down and found a cheap aftermarket torque convertor had been installed. The OD sprag was trashed with the plastic spring chewed up pretty bad. Other than that just minor wear on some factory aluminum components. The planets look good and clutches all in good shape. I think after replacing these worn transmission components I want to make sure I address the root cause. I plan on replacing the tach sensor in case that created problems with the torque converter.
Any ideas as to what may have caused this issue initially and where I should start looking to replace parts?
Any ideas as to what may have caused this issue initially and where I should start looking to replace parts?