SC400slide

iTrader: (11)

You did get the real TPS out of the SC300. But you also got the Trac TPS as well. (Traction Control System). The Trac uses a TPS, it will always be to the left of the "real" TPS. If you don't have Traction Control, I don't think you will need it.
*(btw, I forget the site I purchased my TPS at, but I guess that doesn't matter anymore now that you have a TPS. )*
GL man...

scott101

alright, thanks, Ill give the new one a try. is it plug and play or do I have to calibrate it like people were saying? and what does this require

thanks
scott

SC400slide

iTrader: (11)

Once you get the TPS in, it will require calibrating, (what I call it), that is, moving the TPS back and forth both ways slowly, with the car running. Find the spot of were the idle is perfect, or as perfect as you can it at the time. Not hard, just tedious.

scott101

sweet, very helpful, thanks
i will do this tomorrow

i forget which sensor is which, but i will look it up online

they both have part number 89452-33010, its the white numbers that are different.

thanks
scott

SC400slide

iTrader: (11)

You cannot put the trac TPS to were the primary TPS is on the throttle body. The trac TPS spins the opposite way. As long as you identify the Trac TPS, you will be good. That's the reason whenever I get both the trac and the primary TPS's at a junkyard, I put a scratch on the Trac TPS, just so I know. Let us know if replacing the TPS works.

scott101

ya, that makes sense, ya i figured that i the other sensor wouldnt work right. ill try to figure out which one is which

scott101

now that you said that, i think i should be able to figure out which is which by looking at the way that they spin or something

thanks for the info though

scott101

I tried one of them (they both spin the same way and look pretty identical), but the problem is still happening.

NOTE; it seems that the bucking happens when car heats up, it does not depend on wether or not it has been turned off and restarted (it does this now and before the new sensor)

ill try the other one tomorrow but I doubt thats it. Whats up next, the maf?

thanks
scott

SC400slide

iTrader: (11)

Next on the list; MAF!

scott101

will do, thanks. ill just go through the list, its gotta be some sensor or something

SC400slide

iTrader: (11)

I was almost 100% sure that it was the TPS...I had the same symptoms and the TPS fixed it...If MAF does not fix the problem, (highly unlikely), than were gonna move on to the tranny mounts. GL

scott101

im pretty sure the MAF fixed it. i will drive some more today and double check but it did not act up yesterday, cold or warm, on the first start or after it was killed and restarted. seems to be working well


anyways, everyone was saying that with the TPS, it would be fine on the first start but only after restarting it would it begin to act up. in my case, it would act up just when it warmed up, it didnt have to be killed and restarted

thanks for all the help
-scott

2JTsc300

told u man it was the MAF, glad i could help u out, lets us know of u need anything else

SC400slide

iTrader: (11)

Great! Glad the MAF fixed the problem. Unfortunately, with Lexus, any problem is hard to overcome if your not familiar with the car. But that is what makes a Lexus, a Lexus. GL to your further projects!

scott101

thanks for the help you guys. i drove it again for a while today and it was running well