flight86

I need help on how to check my throttle position sensor.

mjr46

why?? and in what way do you wish to check it???

lil_hulk87gt

get your volt meter take the red wire off of t and stick it it to the green wire on the tps and ground the black one turn key on and look for .97 to .99

flight86

well I've been having some Idle problems. My idle surges from 800 rpm to 1100 rpm. Just wanted to rule out the TPS.

mjr46

try running a koeo/koer test, that'll tell you if any codes relate to such

302army187

this got me thinking how ive NEVER checked mine.

I dont have ANY running issues at all, but when i checked mine it was at .85-.89

I just set it to .97-.98....... what could this change if anything?

smokedog

is the factory throttle body TPS non adjustable?

AdderMk2

it is never good to set the TPS to .98 or .99 volts, often times the car will (when running) show a higher voltage than the ECM allows and the car will think its at part throttle.

The TPS should be set between .80v and .90v

302army187

everything ive seen always say's .99 with about 4v at WOT

AdderMk2

actually, the range is .7-1.0 volts. If your car, in the ON position is set to .99 volts, it will very often, at idle, be around 1.04-1.05v. Therefor putting your car into "part throttle" as far as the ECM is concerned, and can cause surging, stalling and other idle related issues.