primary tps. the one in the rear of engine and bottom plates.
make sure old and new tps turn the same way.
some say to use thin shims under the tps at the bolts.
follow the book setting
Good luck. The process is pretty straightforward, as long as you don't mix up the primary and secondary units. I happen to know that first-hand.
Just remember the lead on the primary TPS is shorter than the lead on the secondary TPS.
Plus primary tps is mounted on nber 3 throttle body. If thats not the one yoir changing then you'll have probnlrms. Read guide a few times ask questions prior to slamming that puppy in a door