P0120 Throttle Position Sensor/Switch A Circuit Malfunction
#6
Registered User
Doesnt neccisarily mean the TPS is bad. Could be an o2 sensor, MAF sensor or anything related.
Had a bad TPS code on my girlfreinds 99 and turned out to be both o2 sensors.
Good luck
Had a bad TPS code on my girlfreinds 99 and turned out to be both o2 sensors.
Good luck
#7
grab the tacoma 2000 manual that is floating on the internets out there. it is pretty much the same as a 4runner manual except trim, but the motor info and ecui is all the same....it's out there somewhere....it has all the test parameters to determine which sensor is throwing good voltages
somewhere in yotatech is a link to a site where you can download the manual....forgot where I found it
EDIT:
here is a thread with a link
https://www.yotatech.com/forums/f2/5vzfe-help-137910/
you get download and extract manual to your pc, and you will have an index.html
which brings up the whole thing in a nice readable format.
get this and a volt meter and you will be able to determine basic functionality
of certain sensors. may save you some trouble
specifically you want to read cip0120.pdf which explains operation and test parameters for the Throttle position switch
somewhere in yotatech is a link to a site where you can download the manual....forgot where I found it
EDIT:
here is a thread with a link
https://www.yotatech.com/forums/f2/5vzfe-help-137910/
you get download and extract manual to your pc, and you will have an index.html
which brings up the whole thing in a nice readable format.
get this and a volt meter and you will be able to determine basic functionality
of certain sensors. may save you some trouble
specifically you want to read cip0120.pdf which explains operation and test parameters for the Throttle position switch
Last edited by edzo; 03-03-2008 at 11:22 AM.
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#8
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po120 2000 4runner 5spd
ok, I read the FSM, cip120
so before i try to negotiate this electrontics stuff with a volt meter.. anyone have experience with this? was it a sensor, could the trottle body actually be sticking?
TheRPMs stick, then eventually comes down with time (a second or two at a light)
Is this something I can clean like a Mas air flow sensor?
Any help is appreciated.
Tommy
I don't know lately it seem like it is one thing after another with my runner.
so before i try to negotiate this electrontics stuff with a volt meter.. anyone have experience with this? was it a sensor, could the trottle body actually be sticking?
TheRPMs stick, then eventually comes down with time (a second or two at a light)
Is this something I can clean like a Mas air flow sensor?
Any help is appreciated.
Tommy
I don't know lately it seem like it is one thing after another with my runner.
#9
Here are pics of the TPS (Throttle Position Sensor). It's really easy to change just two screws, You need a stubby screwdriver though. I took these pictures from my 2000 Tacoma so it will be in the same exact spot! Hope this helps.
Throttle Position Sensor
Throttle Position Sensor
#11
Yeah it just is held on with two screws. Nope you just take out the old and replace it with a new one I was told it recalibrates itself when the motor is restarted with the new one. I replaced mine and haven't had a problem along with the Mass Airflow. If you need a pic of it (Mass Airflow Sensor) and it's location let me know I'll go out and take a couple of shots for ya!
Last edited by ravencrew; 01-06-2009 at 03:46 PM.
#12
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Great thanks for the pictures. Is there any doubt that if the code is coming up that the sensor is bad? Is there anyway to clean them like you do with a MAF?
Part number? is that it in the picture 89452-35020 -198500-1061?
I hear in the states it is something like 60$?? I wonder what there are here in canada.. probably 120.
Thanks for the pictures and the post.
Can I assume your RPMs were sticking before coming down until you replaced it?
Part number? is that it in the picture 89452-35020 -198500-1061?
I hear in the states it is something like 60$?? I wonder what there are here in canada.. probably 120.
Thanks for the pictures and the post.
Can I assume your RPMs were sticking before coming down until you replaced it?
#13
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Yeah it just is held on with two screws. Nope you just take out the old and replace it with a new one I was told it recalibrates itself when the motor is restarted with the new one. I replaced mine and haven't had a problem along with the Mass Airflow. If you need a pic of it (Mass Airflow Sensor) and it's location let me know I'll go out and take a couple of shots for ya!
#14
Great thanks for the pictures. Is there any doubt that if the code is coming up that the sensor is bad? Is there anyway to clean them like you do with a MAF?
Part number? is that it in the picture 89452-35020 -198500-1061?
I hear in the states it is something like 60$?? I wonder what there are here in canada.. probably 120.
Thanks for the pictures and the post.
Can I assume your RPMs were sticking before coming down until you replaced it?
Part number? is that it in the picture 89452-35020 -198500-1061?
I hear in the states it is something like 60$?? I wonder what there are here in canada.. probably 120.
Thanks for the pictures and the post.
Can I assume your RPMs were sticking before coming down until you replaced it?
Last edited by ravencrew; 01-07-2009 at 06:23 PM.
#15
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Thanks,
Called my dealer.. approx 200$ for the sensor.
I took a look at it the other night.. looks like the bottom screw is going to be a little tough to get out. just quickly tried but it is in there pretty tight so I left it for a time when I could take my time to make sure I don't strip it.
Called my dealer.. approx 200$ for the sensor.
I took a look at it the other night.. looks like the bottom screw is going to be a little tough to get out. just quickly tried but it is in there pretty tight so I left it for a time when I could take my time to make sure I don't strip it.
#16
Thanks,
Called my dealer.. approx 200$ for the sensor.
I took a look at it the other night.. looks like the bottom screw is going to be a little tough to get out. just quickly tried but it is in there pretty tight so I left it for a time when I could take my time to make sure I don't strip it.
Called my dealer.. approx 200$ for the sensor.
I took a look at it the other night.. looks like the bottom screw is going to be a little tough to get out. just quickly tried but it is in there pretty tight so I left it for a time when I could take my time to make sure I don't strip it.
You go to your Hardware store and buy a small phillips screw bit and attach it to a small socket w/ a small ratchet.
The Socket I use is made for these bits but just a regular one will work. The one made for the bit has a c clip inside so you don't lose the bit.
Saves the knuckles and you can put more pressure on the head of the screw without stripping it!
#17
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I got that code once or twice then it would go away. I cleaned the throttle body and havent seen the code since.
See link https://www.yotatech.com/forums/f123...ac-pics-92286/
See link https://www.yotatech.com/forums/f123...ac-pics-92286/
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