2.5 1997 TJ
I have TPS problem also, Dont mean to hijack but it seems to go on topic.
Scan tool gives code of PO123 TPS volts too high.
1. New rebuilt ECU, It gives the same TPS error on two ECU's tried two new TPS's
2. I have the pinout of the ECU harness and Im goin to check the wires tonight. (long shot but I have to check I guess)
3. I checked the volts at the sensor. 5.4 volts to sensor. 1.15 volts at closed butterfly. 4.25 at WOT (tested to ground in plug) The autozone print out diagnostic says the range of the TPS is .26 to 4.49
So is the 1.15 the problem
????? Whats the fix?
Also I went to the show all data screen and the TPS shows 98% and open throttle and it goes to 100%, sometimes it is at 100% all the time. Im not sure what it should be.
Other note the TPS error will trip very soon without starting engine.
Any ideas would be appreaciated