Taro2413

So i read the testing procedure from every single website you could possibly imagine and a couple from this forum. Now my question is is my TPS bad or is there another laundry list of problems it could be. This is what i got so far....

Input Voltage is 4V.....this kinda concerns me to because if the book calls for 5V and everyone else says there getting around 4.5V-4.6V then something else seems wrong

Output Voltage is 0.....before trying to adjust it i moved throttle to WOT and no change still 0. after trying to adjust it still nothing turning TPS right and then left nothing still 0.

Ground is good on my xj...thats probably the only thing that turned out right in my testing.

Also i did pull the fuse to the TCM and walla its shifts perfect manually of course and while i dont have a tach (idiot light cluster) i could tell it went into overdrive by flooring it after shifting thru all gears and took a normal amount of time to accelerate from 45-50 so im pretty confident it was in OD.

I guess for my question...again...do my readings mean the TPS is bad or is there something else i should be looking at? Sorry almost forgot i have a 87 xj mpi base model.

excess650

It sounds like your TPS is defective or else you're not testing the right points. Regardless, if there is no output voltage, the trans won't shift properly.

Taro2413

So i got new TPS today and installed and adjusted it properly and.....WALLA jeep is back to life and on the road now time to do the hd cooling mods!!! WOOT. thx for the help!!!