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Engine & DrivetrainDiscussions about the engine and drivetrain of your vehicle.
This is a discussion thread titled "No Throttle responce; Engine light on", within the Engine & Drivetrain forum, part of the Technical & Vehicle Assistance Forums category.
Just replaced my accelerator pedal sensor. WOW, what a difference. My truck never had so much power and throttle response, even when it was new. I have to be careful not to spin the tires from a dead stop. Just like the post above, I wonder if this part was faulty from the start? Now I hope it cures the cold start problem. Going to be -5F tomorrow morning, I'm keeping my fingers crossed.
Mtelow,
I hope that fixed it for you; it definitely cured my problem, even thought I did not notice any difference in performance but my truck has always had alot of power(i drove some loaner Tundra's while I had mine serviced) compared to others I have drove. These trucks are strange beasts though...
Mtelow did your replacement go pretty much the way we discussed?
Thank you for the help Mitch. Other than having a bit of dificulty removing the 3 screws(really tight), everything went just as you said. It took about 30 minutes and the temperature outside was 10F. I'm glad the engine was warm.......
So far, so good, it has been really cold at night and I haven't had a problem with it thus far. Mike
This seems to be an ever increasing problem. If you are out of pocket with this problem, SAVE YOUR RECEIPTS. As Toyota does on occassion, if this is campaigned(complained) enough, they will do a silent recall on. I have had the same problem. It's the Accelerator Positioning Sensor. Toyota has a number to do this and takes only a few minutes 1 800 331-4331. If it does get recalled, all of you who have saved your receipts will be reimbursed. So please help all of us who are out of warranty and to help get our $350. back.
This seems to be an ever increasing problem. If you are out of pocket with this problem, SAVE YOUR RECEIPTS. As Toyota does on occassion, if this is campaigned(complained) enough, they will do a silent recall on. I have had the same problem. It's the Accelerator Positioning Sensor. Toyota has a number to do this and takes only a few minutes 1 800 331-4331. If it does get recalled, all of you who have saved your receipts will be reimbursed. So please help all of us who are out of warranty and to help get our $350. back.
You are right and wrong. Mine was the Throttle Pedal Sensor. The Tundra has both a throttle position sensor and a throttle pedal sensor. The pedal sensor is the one which your throttle cable actually connect to and the position sensor is on the other side of the throttle body. I think this a fine example of over kill by the engineer's...Mitch
I was told originally that the problem was the TPS and also that the Throttle Body Assembly should be replaced also. But after having some research done, that it could be corrected by just the APS. Have you had any other problems since? Something about a faulty flap in the assembly...hmmm.
Oh yeah, I agree with the engineering part, but that is a good thing. I have a fleet of service trucks, all Fords & Chevs and every time I have to do a repair on one of them, I wish that I had heavy duty Toyo's....
I was told originally that the problem was the TPS and also that the Throttle Body Assembly should be replaced also. But after having some research done, that it could be corrected by just the APS. Have you had any other problems since? Something about a faulty flap in the assembly...hmmm.
I have not had any problems since I replaced it. I hope it cures the problems. What is the flap?..Mitch
well, my 2000 tundra did this while merging on to the interstate at the entrance to a tunnel. a VERY dangerous place. funny thing is, the exact same thing happened to me about 50k miles ago. the throttle all of a sudden became unresponsive. mash it to the floor and get a little increase in rpm. i drop it off at the dealership and get a call this morning that the entire throttle body assembly needs to be replaced. over 1k for the part alone. i did a search and got to this site. however, obviously no one is complaining to Toyota about this because when i called, "weve had no such reports of issues with that model vehicle".... what! i even told them about this site and they said that people will post whatever they want on the internet and inferred that they may be lies... grrr.... come on folks, if you havent called or if this happens to you, call the number!
I called, as did some others here. Toyota's answer was to save your receipt for the part and the labor, in case they do a recall. I still have it and the faulty part, just in case. $275 for the part. It's easy to put in 3 screws and a plug and now no problems. I have a couple of pics posted of the part. This was 2 years ago roughly. Also, it was recommended by Toyota, that I replace the entire assembly. My mechanic said let's try this first. It's good to have an honest mechanic. Good luck.
AC
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I called, as did some others here. Toyota's answer was to save your receipt for the part and the labor, in case they do a recall. I still have it and the faulty part, just in case. $275 for the part. It's easy to put in 3 screws and a plug and now no problems. I have a couple of pics posted of the part. This was 2 years ago roughly. Also, it was recommended by Toyota, that I replace the entire assembly. My mechanic said let's try this first. It's good to have an honest mechanic. Good luck.
AC
This is the same thing I had to replace about 2 1/2 years ago. I think it is the throttle pedal sensor. Very easy to install. You might have to rotoate the new sensor towards the firewall to get is to line up with the shaft the turn back towards the front of the truck to get the screw holes to line up. The newer models have this part inside the cab of the Tundra.
well, after continuing to argue with the dealership and telling them what ive learned from this discussion, they have gone from wanting to replace the throttle body assembly, to the throttle position sensor, to now... the throttle lever sensor. the head mechanic says that the symptoms i am having couldnt be caused by the tps, that now it must be the pedal sensor. so... im wanting to know what yall think. should i just dismantle the throttle body and give it a good cleaning, replace the tps, or replace the pedal sensor? from what ive described and compared to your experiences, whats the issue? i no longer trust the dealership as theyve told me 3 different things.
well, after continuing to argue with the dealership and telling them what ive learned from this discussion, they have gone from wanting to replace the throttle body assembly, to the throttle position sensor, to now... the throttle lever sensor. the head mechanic says that the symptoms i am having couldnt be caused by the tps, that now it must be the pedal sensor. so... im wanting to know what yall think. should i just dismantle the throttle body and give it a good cleaning, replace the tps, or replace the pedal sensor? from what ive described and compared to your experiences, whats the issue? i no longer trust the dealership as theyve told me 3 different things.
My guess would be the pedal sensor. If it were me and it is still driveable I would take it to Auto Zone or Advance Auto or similar and have them do a free diagnostic check for you. Unless the dealership cleared the memory it should have stored the problem code. If it is the pedal sensor it is very easy to replace. I am not sure what would be involved in a throttle position sensor to replace it and I am very skeptical that your throttle body needs to be replaced. Good Luck.
well, the check engine light was still on when i took it back. ill try and get a code to determine the issue. where did you find the directions on how to replace the sensor? is it avaialbe online? the tps directions require the voltage adjustments, which is the only difficulty i saw in that.
well, the check engine light was still on when i took it back. ill try and get a code to determine the issue. where did you find the directions on how to replace the sensor? is it avaialbe online? the tps directions require the voltage adjustments, which is the only difficulty i saw in that.
I had a Haynes manual for the Tundra that gave fairly good instructions. If you find that what it is you can post or send me a message and I might be able to give you enough info to do it.
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