Hi All,
I've just had my trans rebuilt and I'm still having problems with it. It was done by a relative who's been re-building transmissions for about 26 years now, we have been trying to figure out the issue together. I'll try and list all of the relevant info below, if I've missed something let me know.
Symptoms:
-Indecision between gear on 3-4 shift. You can feel it while driving. Almost like a shutter. Between about 50 and 60mph.
-Hard shifts. 1-2 seams the hardest.
-More rare: On the highway, trans wont shift to 4th. OR, it will jump from 4th - 3rd very easily.
-Non trans related: Vehicle won't start without giving some gas. Or will start and bog out.
Codes:
P0121 TP Sensor or APP sensor 1 problem
P0176 Input/Turbine Sensor Circuit out of range.
P0717 No/Low Input/Turbine speed sensor signal.
Temp fixes:
-Clearing the codes seems to work a little. Makes less likely do downshift or refuse to go to 4th.
-Unplugging the battery fixed the 'wont shift into 4th' problem.
What i've checked:
-The TP sensor has been replaced with a new one, no luck.
-On a visual inspection the input turbine speed sensor seems to work (according to person who did the re-build).
-Wiring from the PCM to the trans (For obvious rubbing or ware).
Car:
1999 Grand Prix GTP. Has a different torque converter (if it is relevant i will find out type). Tuned PCM and other stuff you can see in my sig.
Any help would be greatly appreciated!