Possible TPS Problem

OK here it is...

OK Checked the voltages. Reading from pin D with neg to pin A with Pos. The voltage was somewhere around 4.632. Moved to terminal A and saw a voltage of 4.5** which is not 82% it is much more. 82 % would be somewhere in the range of 3.7... I also tried to adjust the TPS and it did not effect the voltages very much. only about +/- .2 volts. Should it adjust more.

Also measured across the other connector with and found I have .99 volts not the .80 to .82 like I am supposed to. Could not get it to adjust any further down.

Messed with the TV throttle Down and did not make a difference downshifting.

I am still shifting real fast.

My son had a '89 Pioneer about a year ago and the TPS went bad...caused all kinds of crazy "transmission problems". Sometimes it would try to start out in 3rd gear, while other times it wouldn't ever shift out of 1st gear. Drove me nuckin' futs trying to figure it out...until I replaced the TPS, then all was well again. Kinda sucks laying out $75 for a part when you're not 100% sure of the problem I know, but your symptoms sound alot like the ones I dealt with. Good luck and let us know what you find out...

Sounds like the symptoms I had before I replaced mine as well.

NC C3 said:

My son had a '89 Pioneer about a year ago and the TPS went bad...caused all kinds of crazy "transmission problems". Sometimes it would try to start out in 3rd gear, while other times it wouldn't ever shift out of 1st gear. Drove me nuckin' futs trying to figure it out...until I replaced the TPS, then all was well again. Kinda sucks laying out $75 for a part when you're not 100% sure of the problem I know, but your symptoms sound alot like the ones I dealt with. Good luck and let us know what you find out...

Click to expand...

75 dollars it is more like 90.00 after taxes and stuff. That is the cheapest I found it. Without shopping on Ebay...

you will live here, love these prices

just bought one yesterday for 40.00

Well probably paid too much but it fixed the problem. I also ended haveing to buy a new fuel pump...

Well...glad you got it figured out. Like I told myself afterwards..."You're that much smarter now!"