Lexs400

I would like to know where the throttle position sensor is located on the 93LS. a picture would def. help. I have read the post about adjusting it with a multimeter and want to address it.
Moreover, if I were to replace the TPS, is there only one or two TPS in the car with traction ? if two, where are they both located ?
When a new TPS is purchased from lexus does it stll have to be adjusted once it has been repalced in the car ?
thnx.

LexLS

How to: http://www.lexls.com/tps.html

If you have TRAC there will be another similar looking sensor to the left of the TPS on the throttle body.

You have to adjust the TPS because the adjustment is made on the car...you'll see in my tutorial how it works.

Lexs400

thnx for the info. I did change the TPS but wanted to know if the other sensor which is similiar looking has any relations to the function of TPS. When should that sensor be changed ? more over the TRAC warning light that came on in the dash pointed to faulty TPS. What type of warning lights would be generated or what behavior would indicate a faulty sensor which is on the left of TPS ?
On my 93LS, there seems to be hesitation while accelerating, it's almost as if the gear doesnt downshift when needed for the pickup to be there. 50% of the time the pickup is excellent because the gears downshift according to the amount of gas pedal pressed, at other times unless I floor the gas pedal, downshifting does not occur.
I would've thought that changing TPS would cure this but it didnt.
any ideas ?