mullishacrew

alright, well sorry if it's been asked before, but id like to know how the TPS works, and what it controls? and how would i know if it's not working?
thanks gregg

Dean Snow

It just controls the 3-4 up and down shift. Basically only runs the over drive.

TPS sends out different voltage signals to control when it shifts.

They read in the area of .6v - 1.20v.

As you push the pedal the TPS moves on the fuel pump and the voltage changes sending a signal to the transmission telling it when to shift.

Trooperthorn

A lot of guys are replacing it with a **** on the dash to manually program the shift point. A cheep and cool fix, even if your is working. Check the sticky on it. Excellent write-up.

Rampage1967

I think it probably also helps regulate the cruise controll .. I know it does on the gassers.

ouchman

If you are having problems with your TPS, save yourself the CA$H and do my TPS-Tightwad-fix. The link is in my sig. Many have tried it and love it. It gives you a lot of control over the shift point, which is very handy, plus it only costs a few bucks and some time. STICK TO THE MAN!

mullishacrew

oh so it dosent control 1-2-3 shift? because i just put a rebuilt 618 in my truck, and it doing the same thing the last transmission did, shift 1-2 almost right away at 20-30 KMh then 3 has to carry it from 30 up, what could be the problem with this? iv adjusted the t.v cable in a bunch of locations, but cant get any better. any advice?

Rampage1967

I - 2 - 3 are hydraulically controlled . .
TPS + ECM +speed sensor + temp sensor controlls OD.

mullishacrew

so, what do you suppose my problem would be if it still wont shift right? i have put a new cooler in, all new lines, along with the transmission when i did the swap.