Is there a difference in the TPS on a auto or a manual? I have a 89 if that matters. Autozone.com lists one for each but those sites aren't always accurate. The reason I ask is there are several auto down at the J/Y that I could harvest one from but I won't bother if it won't work. Thanks

 

There is definatly a difference, the automatic has a wire harness attached to the sensor, where as the manual has a solid body and no wire harness. The adjustment procedure is also different. Not sure how it differs internally, and I am sure a seasoned veteran here can answer more, but they are definatly different.

 

Imo, just pay the $30 to get a new TPS instead of pulling one from a JY. Stuff like that, it'll almost always last a LOT shorter amount of time than a brand new one. It's cheap insurance.

 

Show me where I can buy a new one for 30 and I will. Autozone is 75 and Kragen is 125.

 

Yes, now that I poked around a little more I see that the auto version has another pigtail coming off of it for the auto trans. However, since the input voltage, bolt pattern, and signal to the ECU are the same it seems to me that it would still work exactly the same, you just wouldn't hook up the other pigtail if using it on a manual. For 2$ I'll probably give it a try and see what happens. It can't be any worse.

 

For RENIX, there is a difference (however, you can use an auto TPS with a manual transmission-equipped vehicle - simply disregard the four-pole square Weatherpack. Pull a condom over it and tie it off.)

The problem is that the RENIX ECU expects the sensor to respond one way, and the TCU expects an opposite response curve. Therefore, the two "halves" of the Auto RENIX TPS work in opposite directions.

ChryCo ECUs expect the same curve as the TCU, so 1991-up saw the sensor reduced to one operating element.

For RENIX, if you have a stick, just use whichever one costs less.

 

Thanks, that's exactly the info I was looking for. I'll give it a try tomorrow.