[herrubermensch]

Interestingly, I replaced these on my engine about six months ago, and the first thing Mr. X noted when dyno tuning my car was that they were not responding to throttle position the way they should and "needed adjustment." I did not know that TPS could be "adjusted." Anyone know what Mr. X was talking about? Is there some sort of calibration procedure that needs to be performed after replacing these pups?

--Peter

 

[herrubermensch]

possibly they were referring to resetting the parameters of the accelerator pedal position?

That's what I thought--adapting the pedal position sensor! But Mr. X said no, that voltage was correct at WOT and that it was the new TPS that were spitting out the wrong voltage.

--Peter

 

[herrubermensch]

what is the procedure for resetting the throttle pedal parameters?

Key in position two with engine off. Slowly but steadily depress accelerator until it is all the way to the floor. Turn key off. Let sit for 10 or so minutes. If that doesn't do it, repeat. Sometimes, I have had to do the foregoing, then slam the accelerator all the way to the floor and THEN turn off the key for 10 or so minutes before the PP sensor adapts. It's a sensitive little bugger and extremely difficult to replace. I know because I ultimately had to replace mine, and it took and entire afternoon, removal of the lower part of the dash, and lots of bleeding and cussing before I got it done.

--Peter