TPS installation?
Thread Starter
Instructor
Joined: Nov 2006
Posts: 166
Likes: 0
From: Madison WI
TPS installation?
I have a 85' that I think I need to replace the TPS in. Can I do this myself or do I need a garage to adjust it or something. Its slotted so does it need calibration? Or is it simply a matter of putting the new one in? Thanks,
Tyler
Tyler
Race Director
Joined: Sep 2000
Posts: 17,298
Likes: 32
From: The Top of Utah
It is easily replaced with two screws. Then, with the minimum air adjustment where you want it, you rotate it on those screws in the slotted holes to set the voltage to the spec in your FSM, which is 0.525 volts, ± 0.075 volts, I believe. Of course you have trouble shot and checked that it doesn't progress smoothly from one end of the range to the other, and/or has dead spots, right?
RACE ON!!!
RACE ON!!!
Melting Slicks
Joined: Apr 2002
Posts: 2,118
Likes: 0
From: St. Charles, MO Route 66 Corvette Club
Just like CFI-EFI said ......it is very easy assuming you have a digitial ohm meter, jumper leads and some Torx tools. Unplug the old TPS, remove the two screws and install the new one. You are going to need some jumper leads to set the TPS to the proper voltage with the ignition on and car not running. If you have a scanner, this will read the TPS voltage for you. Let us know if you have other questions.
Drifting
Joined: Dec 2003
Posts: 1,491
Likes: 94
From: Westfield MA
Also, be careful with the screws, if they give anytrouble, put some penetrating oil on them and go back and forth. Mine ended up breaking and I had to tap the holes in the throttle body. If you do get them out, make sure you put never seeze on them before reinstalling.
Team Owner
Joined: Jan 2003
Posts: 20,254
Likes: 221
From: Summerland B.C. Canada
With all of the above 
To measure the TPS voltage, take a paper clip and slide it beside the wire and into the connector. You will need to do this to the top 2 wires of the TPS connector. If you have slid the paper clips in far enough, you will be able to get a voltage reading (key on) by placing your leads from DVM on the ends of the paper clips. Adjust to desired voltage and tighten screws.
