98 cherokee 4.0 4 speed auto tranny 172,000 miles. I replaced the TPS and also tested the new one to ensure it was good and I still keep getting the P0122 code and check engine light.Also this seems to bring in the P0700 code for the transmission control trouble.I also replaced the NSS recently which eliminated code P0705.I have tried disconnecting the battery and resetting the lights with an OBDII scanner.Any help would be appreciated.

 

Anybody?

 

Bump

 

Hi, did you ever figure out what was causing the OBD codes? I am experiencing the same errors on a 1997 XJ, auto tranny, 4.0, etc.
Thanks,
Bob

 

I am guessing the problem is the clockspring I am gonna wait till I find a used one.I am not sure if they can be rebuilt but I will check.let me know how you make out

 

I solved my problem with the P0122 and P0700 errors. After doing a bunch of net research, I checked the wiring at the back of the head but found no problems. I used tie wraps to raise the wiring away from anything that could rub and cause future problems.

I am very fortunate that my son has a 98 XJ. I pulled his TPS and installed it on the 97. This fixed my errors. I then purchased a new TPS (Borg Warner) and installed it on my son's 98. Everything worked good on his XJ so I hope I am finished with this problem.

I haven't seen a clockspring cause this type of error. I have seen clock springs cause the horn to stop working, the air bag light to come on or the horn to stop working. I think I have seen every possible combination of these symptoms.

You could actually pull your clock spring (takes about 15 minutes) and check it internally and with a volt/ohm meter. I've had good luck using the beeper function. The inside of the clock spring is just a spiraled ribbon cable. They are pretty basic. There is some kind of goo (dielectric grease?) as a lubricant. At the center, there is the plastic holder/wire loom that is visible before the unit is taken apart (wires come out of it). I have seen several of these that have broken plastic wire looms which caused the ribbon cable to break. To make life easy, position your wheels so they are pointing straight ahead before you begin taking things apart.

To reinstall the clock spring, GENTLY turn it clockwise until you can't turn it any further. Then back it off 2.5 turns. With your front wheels positioned so they are pointing straight ahead, install the clockspring. At this point, you can either install wiring and all the covers, etc you removed to get at the clockspring or you can install just wiring and the steering when to test things. If the clock spring isn't positioned so you can put on the steering wheel, just rotate the clockspring counter clockwise until you can (should be less than one full turn). The wires go through the hole in the bottom of the steering wheel.

Good luck.