kinka17

Well I found it. The ground on top of the intake manafold was causing my voltage drop. Not sure how it got loose, but I could wiggle it with my hand. I tightened it up and no more problems.

Hi. I have a 98 Legacy outback 2.5. I just rebuilt the transmission on this car, so I know its not transmissions related. I'm having trouble with a harsh 1-2 shift, and late upshifts after. It doesn't do it all the time, but i have discovered its because of a voltage drop to the transmission that causes it. I have tried all the following: New MAF, dropping resister, NEW TPS, used TCM and I have traced all the wires for HOURS, and see nothing grounded or cut. I have no idea what could be causing this. Any ideas, no matter how crazy, are appreciated.