mojosmokin

Ok my car has been giving me problems for a while. i put a non oem tsp sensor on the car. after a few days the car started acting funny. it was idling really high and if i touch the tps sensor the tps motor that it connects to starts making a grinding sound almost. it acts as if there is a short or something in the tps sensor or the motor. sometimes the car will lose the gas petal. just restart and its fine. i tested all the parts. tps, pps, and even the motor and everything tested ok. i have 5v to the tps and the ohm tests everything passed. what else can be tested so im not just throwing parts at this thing. any help is appreciated.

gerrb

iTrader: (34)

It will be nice to know what year and model / engine is in your car . Then what specific kind of TPS sensor did you install since you said it is non OEM. Tough for people to give an advice when they do not know what they are dealing with .

mojosmokin

sorry lol, its a 01 gs300 with 2jz. and the tps sensor was from auto zone. not sure what brand. its also the 2nd one. both do the same thing.

Bails

I have an 01 is300 myself that i had issues with. Turned out to be the tps. I had replaced with an autozone one but still had issues. Turns out the connector wasnt a snug enough fit so when id hit a bump or it would wiggle it would cut into limp mode and throw codes. Be sure the connector is a tight fit and check your voltages with your car idling after it is warmed up

mojosmokin

The plug connection to the tps is good. When i touch the tps not wiggle it just touch it the motor sounds as if it's grinding and tweaking out. I think it's either the motor going out orrrr this cheap tps sensor. It has a metal cover or something over the top that can move and when i touch it the thing goes ham. I'll get a pic and video later if i can.

rayson

I have a 1998 SC300 and have the exact symptoms as the original post....after 10 minute warm up, sudden loss of acceleration. CEL came on showing a P1120 code.

I bought the OEM throttle body lever sensor part number 22060-46010. Installed it. CEL turned off and I thought all was great again.
After about 10 minutes, I started losing acceleration again! CEL came on. This just happened today so I havent had a chance to check the code but Im sure it will be the same.
Any clues on this? Maybe I got a bad replacement part?

Bails

Update to my last post. It ended up being the apps for my 01is300. I did it last as it was the most expensive. Put the old tps back and and returned it as well.

Blkexcoupe

iTrader: (8)

It's possible that it's the throttle motor itself and not the lever (or both if you're unlucky). I wrote up some info on it in my build thread when my car had the P1121 code. https://www.clublexus.com/forums/bui...ml#post9604481

There is a link with pdf files on how to diagnose P1120 and P1121 in there and some other info in that post.

rayson

Man, I just pulled a Bart Simpson. Doh!
When I pulled off the broken sensor, I looked at both for awhile comparing them...I ended up re-installing the SAME OLD broken part, and not the new replacement one!
I examined the lever sensor closely on the engine and noticed it did not look new. I took it off, made sure I installed the NEW one and all is good again now.
AT least for me, it IS the lever sensor 22060-46010.

GaryCharlt

Well, this post is now 10 years old and I have found its info. useful, so useful that I joined the forum to make this comment.

92sciowa

Hi I have a 1992 lexus sc 300 where would i get a Electronic Throttle Body Actuator are an innerchange able one

JohnMurry

Hey everyone I have a 1998 Lexus gs300 and I’m getting codes p1120 and p1121 when I press the accelerator pedal I get nothing unless I mash it down to the floor and I only get 2000 rpms.WHAT IS WRONG ANY HELP PLEASE

rayson