I was trying to adjust my TPS today to sort out the TC hunting. I found that the TPS would have to be turned a 1/4 of a revolution for the voltages to be right. Of course the bolt holes will not line up Is there supposed to be a bushing or spacer in the TPS to take up the slack? For interest's sake I siliconed a small chunk of metal to the inside of the TPS to take up the slack. I am getting about 0.9V at idle and 3.15V at wot and the tranny works much better.

 

Mine had metal bushings that I had to remove, I also needed to file the holes oval to get it to turn enough

 

I removed those bushings. I am wondering if there is anything that sits between the throttle shaft and the TPS.

 

It's weird. We're supposed to have 1.2 volts. Mine read .7, and after removing the bushings, I could get .9.
I put the thing in our mill, and slotted the holes enough to get 1.37 volts.

Didn't really do much for my truck other than show that the TPS voltage is high when hooked to an OBD 2 computer.

What really fixed my TC hunting problem was getting my GSK adjusted properly. They were in too tight.

 

Actually I am not talking about the bolt hole bushings. I am wondering if there is something that fits between the key of the throttle shaft and the slot in the TPS. I ended up having to cut the 2 bolt holes right off the TPS case to spin the TPS enough to get 1.2 volts. I then built a bracket to hold it in place.

 

Essentially the same thing I got, just a different approach.

Not sure if you'd be better off by trying to "shim" the switch by adding mass to the operating "nut". Tou're accomplishing the exact same thing, but with more effort, IMO.

 

Just a quick note... mopar's adjustment for your TPS is 1.0V +/- 0.2V at Idle throttle position... so if you're going under .8 or over 1.2 you're going to throw a code for over pressure on the torque convertor (because this thing controls torque convertor pressure). If you don't have a "shift kit" installed that will handle the higher pressures, you're gonna run your tranny into the ground. You're probably OK at 1.3 to 1.4 volts, but I definitely would not go any higher than that... I have run into some folks who found out the hard way...

Just my 2 cents...
Johnny