Thank you for sharing this information about GM's electronic throttle bodies. It's good to know that there is a new fix available for the issue and that you have shared a helpful video demonstrating how to replace the TPS sensor and clean the throttle body bore. This will definitely be useful for anyone who is experiencing problems with their electronic throttle body. Keep up the great work!
Hello Mike, thank you for the info on the electronic throttle body reset. I had to change out the intake plenum on a Buick Rendezvous 3500 v6, I got a used plenum from a local yard, cleaned, and changed all gaskets and butterfly 'O' ring. Got everything back together and made one simple mistake. That was ''I didn't connect my 13-wire connector to the throttle body and started the engine. I was not a happy camper, I saw your video on testing front ABS sensors on a Buick vehicle and the test equipment you use. So I decided to watch your videos from now on. I'm going to attempt to do the relearning process and get let you know. Thank you for sharing your knowledge with us.
I've had good luck with the kit and the idle relearn went great with all but one. It would high idle and if I put it in gear it would idle down and stay there until I blipped the throttle and the high idle would come back. Cleared the KAM several times no luck. Drove it and every time I went to slow down it was at high idle, come to a stop and idle would return to normal idle, hit throttle and high idle. It had the high idle when it came in before the TPS was changed. Reprogrammed the PCM and car idled perfectly and it was the only thing that made sense. If you ever run into it there are several forums like iATN, Suretrack, etc where the fix is reprogram the PCM
Bob, wow good info to know. That could be really frustrating to a tech not in the know. Perform the tsb thinking it's going to solve the problem ,only for it to still be present. How many people would throw a whole TB assembly at it?! Great find with the reflashing! Mike Becker, Technical Services Instructor
I am actually here for the relearn procedures. I have followed the book, but it won't idle down. It's doing exactly what you said. I think im gonna try to reflash it.
@UC__9rTAUp04BMWk2KNIzQPw And sometimes you'll get one that requires reprogramming because of corrupt data or a glitch and a quick reprogram straightens it out! Only happened once but it's a known GM issue and the reprogram is a known fix when the relearn fails
Thanks for the great vid! My idle is fine but my throttle positions didn’t change. Position A and B are at 18% and relative throttle position is at 5.8%. How do I correct or adjust? I did relearn procedure 3 times. No effect.
Hey Chetty Mo, thanks for watching! That may be normal idle percentages. Are you having any issues with it? The throttle body can't be closed all the way. It will always be more the 0%. Mike Becker, Senior Instructor
Hey Bigcliffe, you are right. We really should be. When I work on my own stuff at home I wear gloves. It is safer and better for our health. Mike Becker, Technical Services Instructor
Hello, I did this kit on my 09 sierra with 5.3 codes all cleared and she runs well; however..according to my scan tool..I only get 83.9 % throttle opening...says the same for desired and actual...have you encountered this issue..and if so, how did you correct it?
Hey mynameis63, no I haven't run into that before. Interesting...no codes at all? Could it be an error in the display of the scanner? Do you have another tool you could try? Mike Becker, Senior Instructor
@@GoTechTraining Thanks for replying Mike. I watched a video from another channel...and noticed his scanner gave the exact same value as mine..thinking this must be normal..In that video I seen this info..that vehicle also ran well after the replacement...so I`m gonna just run her like that. Once again, thank you for replying..Subscribing to your channel now. :) n
Have a question. Followed and did everything correctly. But when I shut the engine and start it up again the next day. The check engine lights turn on and the same codes appear again. It is becoming a daily routine to clear codes after starting the engine. Before going to work and going home. Thanks for any help you can provide.
Hopefully someone can help. My son has a 97 Pontiac Grand Prix GT 3.8. Some genius removed one of the vacuum tubes from the base of the throttle body and put a screw in place. Can this tube be replaced or do I have to buy another throttle body. If I can replace the tubing what’s the size? Thanks
Very informative and thank you for sharing your knowledge. My '05 Silverado 6.0L has a coolant tube running through the assembly and I would like to avoid draining coolant in order to remove it for cleaning. Can I just remove the two torx head bolts holding the throttle plate and slide it out for cleaning as long as I put it back exactly how it was?
Hey Americanstrife, thanks for watching. Honestly, I've never removed the throttle blade from the shaft. I would just unbolt the throttle body and clean it under the hood still connected to the coolant lines. Mike Becker, Senior Technical Instructor
@@GoTechTraining I cleaned the throttle body as you suggested and no issues with reduced engine power or TPS codes but I'm getting P0300 random misfire yet the truck is running fine. My TPS% is 4 at idle and ST fuel trims look good but LT is +5 at idle and jumps slightly when revving then comes back down..any suggestions on what this could be? I never had this code before I cleaned the throttle body.
Hey Mike, the parts stores don't diagnose cars. They pull codes and play the odds. If the dealership is reputable then I would trust them. Mike Becker, Senior Technical Instructor
either of the two parts would be a super early failure at 4yrs old. If you have modified the air filter ("cold intake" etc): make sure MAF is super clean! (MAP sensors are solid-state million miles items)
What's the deal with cleaning/replacing the Idle Air Control Valve on a 2007 Colorado 2.9L ? Already cleaned the TB and MAF. I'm having engine shut down problems on heavy braking and especially braking and turning at the same time. Google/RU-vid is telling me to clean/replace IAC but I can't find ANY info on where it's located
Well done, does this sensor exist for 2011 Chevrolet captiva 2.0 ltz C100, and how do I get the instructions..thank you so much for sharing your knowledge.
Hey Larry, hard to say for sure. Best course of action would to be an accurate diagnosis but a P2109 does point to a problem with the throttle body. Mike Becker, Senior Instructor
Thank Mike for your reply, I think I mite buy another fuel Electric throttle body. Larry, another mechanic said it was a harness problem to the throttle. Larry
You should remove the gear to check the teeth beneath it. They are poly and are notorious for wearing or breaking and is often the cause of failure and limp home scenarios.
Hello Mike. I have a 2004 Nissan Murano with the code p2135: TP sensor code. The vehicle accelerator pedal keeps being unresponsive. When this happen, you let it cool off, and you regain acceleration. I am asking myself how the tp sensor can trigger this unresponsiveness when it only reports the throttle opening and speed. Do I have a short somewhere?
Hey, on a drive by wire system if the TP sensor is not reacting properly it will put the vehicle in limp or reduced power mode. This will not allow you to accelerate the vehicle. Chances are you have an issue with the TP sensor, wiring, or the throttle body itself. You could try cleaning the throttle body and seeing if that helps first. Mike Becker, Senior Technical Instructor
Hello Mike, Toyota corolla throttle body sensor back probe key on; grd wire reads0.01v opened close throttle no response; Middle wire signal reads 12.36v; bat 12.65v; 5volt ref wire reads 1.67v no throttle resistance. Ohm meter disconnected connector exposing throttle pins clipping grd and signal pin to ohm meter it reads 1.814ohms open/close no response is this a defective sensor? Respectfully, Alexander Gonzalez.
Hey Alexander, long time! Hope all is well! From what you're describing it sounds like it could be a bad sensor. When you open/close the throttle body you should show a varying voltage output on the signal wire. What does the scan tool do? Can you see data and see throttle voltage or percentage? Mike Becker, Senior Technical Instructor
Don;t have an oscilloscope wave form picture. On-board diagnostic tool did not pull up a throttle body code. Remember, this was the Toyota corolla 2000, that repeatedly kept pulling PO171 leans code. We fixed it; it was intake manifold gasket; the code disappeared for 3 months. Same code came back PO171 because the fuel pump was weak losing pressure; so P0171 was a deferring false code pointing to fuel pump; fuel pump was replaced and along with was another pre-existing symptom. I had failed to tell you at that time, about a consistent soft infrequent hesitation, while idling and driving; head lights powering down, then brightening; power high while driving, then slight lose of power jerking the car while driving; this is the throttle sensor. I floored the throttle, after testing new fuel pump with fuel pressure gauge on, it worked to SPEC PRESSURE WAS 45lbs, THEN IT JUMPED TO 55LBS, it wanted to start; it was hesitating, so I floored it, the accelerator. I heard then, a loud sound, like switches; it shut down like a kill switch activated; it was the throttle sensor and possibly the the vane kill switch inside the mass air sensor. The sounds came from the center of engine and under driver side kick panel. where I found an after market kill switch. Since then, the car was able to crank however when the anti-theft circuits kicked in, it blocked the starter relay from cranking. I drain the ecms receptors capacitors erasing the anti theft memory, so it cranks now but will not start because of this throttle sensor. My the thermistors read 5v reference communication with ecm works, it is not dead, like I thought. Its great to see you again. I have been studying my old mechanics and circuit integrity books enjoying continued education at home. I have appreciated the value of the scope you use even more then ever; the amp and volt meters too, very much. And most of all your classes and videos! I would love to train with you seriously now!
Hello Mike, The scanned tool pulled up an open circuit relay pending code, that feeds the fuel pump. I don't know how to test the relay under load? On that same wire leg before the fuel pump is the neutral safety switch,it shares the ground to fuel pump, which is not working in park, it only cranks in neutral. All three components share the ground; perhaps I am wrong the relay open circuit is on power side. There're 2 fuses in engine fuse box both diagonal from each other, both 10 amps, they are undamaged without power, the horn and head light. Inside, under the dash fuse box is an ignition fuse, with asterisks, also 10 amps undamaged without power. The throttle signal wire voltage is 12.36v short to ground. I am just learning how to do voltage drop test to ground with meter neg terminal on bat neg to check ground side; negative terminal to battery positive, to test power side of the load. its confusing to mind blending concepts causes confusion. It is so cold out, intolerable to work outside. The battery is out of car on a trickle charge however will the ecm forget or remember, when battery is installed or will it fall asleep and not wake up? Do I need to relearn the ecm and how is it done? Respectfully, AG
Hey Andy, thanks for watching! Yes, the new sensor does come with it's own cover gasket. Still a good idea to pick up a throttle body gasket though. Mike Becker, Senior Technical Instructor
Thanks Mike, sounds good. It didn’t look like I could get the old sensor gasket off without damaging it. My normally trouble-free 2010 Silverado went to reduced engine power on the highway in Boston at 3 a.m. in 0 degree weather while bringing my son to the airport-that was a nice surprise. I appreciate you taking the time to give good instruction and thanks for replying.
I took it out one day and and went home to do a water pump change and brung my throttle body to and it dropped a little on the floor but it was still in th bag and the piece broke off and then i use the hold throttle bottle spray to clean it every since then I'm haven all kinds of throttle body codes, 1. Throttle body actuator 2. Throttle body sensor 3. Basically the hold throttle body now.
Sam, a bad TPS could cause all kinds of issues on a drive by wire car. I assume your vehicle is stuck in limp mode or "reduced power mode". Mike Becker, Senior Technical Instructor
I have a question... my 2003 5.3 Flex w/ 180k+ is giving random misfire. I've changed: plugs, wires, fuel pressure regulator, fuel pump, MAF, throttle body sensor and in the process of changing the coils and the entire throttle body.My question is: should the middle sprocket/gear freely slide inside the throttle body. Or should it be firmly affixed to the stem that it is on inside the throttle body?Thank you.
Hey Bamaborn74, if I remember right the gear was pretty loose on there. If you were to flip the TB over it would fall off. Mike Becker, Senior Technical Instructor
I was having random multiple cylinder misfires on my 5.3. I changed the intake gasket, alternator, and the number one coil. But I didn't know not to move the throttle plate.... Now I'm trying the relearn procedure, no luck yet....
Thanks a lot for the video. I have a Mitsubishi Outlander 2008 2.4L where the RPM fluctuates only in the morning until it warms up then everything becomes normal. No codes. I feel a lack of power and it doesn't shift after the second gear unless I removed my feet from the accelerator pedal and put it back. I'm suspecting the throttle position sensor, any idea? Cheers
FYI: the new sensors are natorious for "failing within spec"... NTSB is currently investigating GM for build in a bypass within this updated sensor...meaning it can fail without throwing an engine light....be mindful of symptoms for the future
@@GoTechTraining : one thing to watch for., when this part stop fully communicating with the ecm, it can/will throw p1811 and a couple others., I took into GM 3 months after replacing it and they had NO HESITATION of replacing it, and guess what...fixed all symptoms. The no hesitation with GM makes me think they are well aware of the faults with the new sensor.
Ok So I need that sensor for my 08 TrailBlazer but the dealership tells me I have to buy the whole throttle body. They do t want to sell me just the sensor. What can I do.?
HI Junior, What engine does your Trailblazer have? I don't think all engines have a replacement TPS sensor cover available. I believe only the V-8, 5.3, and 6.0's have kits available. Ryan Wilsing
Ok... Strange. Today the truck started like nothing happened .! I'm confused, if that sensor to throttle body goes bad, is not supposed to work the next day. So... In thinking the fuel pump.?
The sensor can fail intermittently, This is why the engine can run good again. Every time you cycle the key, the engine computer will reset and check for issues. If the TPS cover is not glitching at the time the engine will run good until it sees the glitch. I hope this helps Ryan Wilsing
@@GoTechTraining local auto parts store wants $120. For sensor pack and $180 for the complete unit: sensor and throttle body. I just bought the complete unit
@@metzmatu8409 ok yea thats the way i put it back but just making sure i didnt mess anything up putting that back because now my truck is acting different but i think i just need to re learn throttle position
Hey Mike thanks for the video. I did everything like you did and when I start my Silverado. it idled perfect, until I touch the gas pedal . then the rpms went up to 3000 and would decrease to about 2800 and hold there. Did I not install the sensor correctly? any feedback would greatly be appreciated.
@@GoTechTraining Mine worked perfectly after replacing the Throttle Body Sensor, but here recently it has started revving to 3k rpms on cold starts. Have you ever dealt with that?
@@blakemckinley2990 me too! Trying to find the answer myself. A mechanic said most likey if you cleaned it, like I did there may be deposits sticking the plate or I have to get a new TB 😳
Hello.I have a car meredes W210 compressor with engine 2.0 liter, and I have a problem with compressor, you know near the compressor there is a same tipe valve between the air filter and compressor.I remove filter and see the valve position it were open, I run the car push the acceleration pedal bat valve not turning it stai open and no motion.is the valve stuck what is the problem? Say me please what is tha valve position if power is off??I think the valve must be closed.
Hi Edgar, what valve is this that you're talking about? are you talking about the throttle valve? The flap in the throttle body? Mike Becker, Senior Technical Instructor
@@GoTechTraining Not throttle valve, it is near the compressor.This valve supply compressor air to the engine, then this air passing through throttle valve and MAF( mass air flow ) sensor, then to the engine. But both valves have a same construction.
I'm sorry Edgar, but i'm not familiar with which valve you're speaking of. Is this like a blow off/wastegate type valve? Mike Becker, Senior Technical Instructor
@@GoTechTraining Ok for throttle valve for example there isn't electrical power car isn't run.What is the right position of throttle valve flap? Open or close?
The throttle body attached to the air filter housing will remain open until the engine exceeds 2500 rpm. When the engine exceeds 2500 rpm, the throttle will close to redirect air into the supercharger. The 2.3 Kompressor engine has a dedicated throttle body for normal air intake attached to the intake manifold. Your Supercharger (Kompressor) air bypass throttle body is working normally in this case.
The teeth on the black gear which is connected to the throttle plate looks likes it's worn out. Looks almost like it's worn where it is normally used which is between idle and 70% throttle. Is this normal for say a new throttle body?
Hey Reweydewy, I don't think there is any significant wear. At least none that is currently affecting operation. This car has been back on the road now for about a month and a half, and no reported issues. I do see what you are seeing, where the black gear does look slightly worn. I would assume a new one to not show that at all. Should any problems arise down the road with this car I will make sure to shoot another video detailing on wear on the black gear. I also will keep my eyes open for more of these and see how they look. Mike Becker, Technical Services Instructor
Hey Mike. Ihave a GM Holden Commodore 2007 ( Australian car) with a 3.6 ltr v6 she had all the symtoms you describe. Do you know if my throttle body is the same. as it looked identical.Italso makes a strange click clack sound after turning it over for a few seconds when you stop. It also wont start.. Any Help apreciated Bro. Cheers From NZ again.
This does not work at all, finally had to the Idle Relearn Reset with a Snap On Modis; without it the actual and indicated angles are not synchronized correctly no matter what you try to do otherwise.
Hey Metal Maniac, sorry to hear that. The procedure does work. This vehicle did not require a scan tool to get it functional again. Mike Becker, Senior Technical Instructor
The Mini Cooper I worked on a couple of months ago experienced that same code, I believe it was a p2135. Turned out to be a really clogged air filter and I also cleaned the throttle body plate. Problem fixed in that case. I have not changed/updated the TPS on a GM throttle body. Looks easy enough judging by your vid!
Isn't it crazy what a clogged up air filter can do!? I am actually going to be demonstrating that in the class we have planned for next week. It is easy enough, those clips can kind of be a bit of a bear though! I definitely struggled with them a bit in this video lol. Mike Becker, Technical Services Instructor
Can a throttle body be safely opened manually (pushing the flap like you did) while it is still installed? I cleaned mine but because it was in the closed position I only did the outside.
Jeff. you can safely do it. I highly recommend unplugging it first. Shut the key off, unplug the throttle body, then clean it. Those motors have a ton of torque and could cause bodily harm...better to be 100% certain there is no power going to it! Mike Becker, Technical Services Instructor
That's what i'm here for Jeff! Glad I could help. *Rule of thumb* save it, unplug the throttle body :) Be safe my friend! Mike Becker, Technical Services Instructor
Greetings Mike !! As always, excellent information .. I ask you; What happened to the shirts, about the last live event that our colleague Frizt broadcast live? I do not remember well if it was the one of; "Fuel trims-oxygen sensors", "Wide Band air / fuel" or "Emission testing" No e-mail was received from Him. Although, you have my information!
Robert, I don't think the GM throttle bodies are coated. Ford's are. You spray a Ford and it's practically junk...GM's on the other hand are just raw metal. Mike Becker, Technical Services Instructor
Don’t change the sensor just change the whole throttle body there are other parts in the throttle body that can be bad I learned the hard way wasted some money in the process.
Saludos Noelmatute y gracias por el comentario, y con respecto a tu pregunta desafortunadamente nosotros no reparamos los throttle bodys de ningunos de los vehicuos, yo se que Wellsve esta empesando a produsir los throttle bodys pero para los vehiculos de la Genaral Motors pero nada para los audis. Fritz Fuchs Instructor de Servicio Tecnico Automotriz.
