GM Genuine Parts 213-912 (17123852) Throttle Position Sensor

I've had three Pontiac Grand Am's, and had to replace this little item on the last two of them. Same problem each time. One day you start the car and it's idling at 1700 or 1800 RPM's and won't idle down. You get to a stop light and the car still wants to go and you have to really press on the brake to keep it stopped. You'll be going down the highway and you let off the gas and you'll still keep going at about 40 miles per hour without your foot on the gas. It's very easy to change since it's right near the top of the engine mounted on the back side of the air intake tube. Two screws (not sure what they are called, but they are not phillips or regular, some type of torx I believe) and you're done. Vehicle works perfectly after changing this....solved my problem anyway.

The original Throttle Position Sensor on my 1996 Beretta had not been replaced in 25 years. It was giving problems as in performance while driving having like a dead space in speed off and on. These sensors later found out are to be replace every 80,000 miles, was way past that on this car. After installing with the new sensor all the problems went away. Runs beautifully, like a new car. Removing the sensor a bit of a grind cause the bottom bolt is a little tough, need patient and steady fingers.

I adapted this for use on my 1987 Porsche 944S with a custom mount and aftermarket ECU and it works great. I can't speak on the fitment of the product (as my car was never meant to use this type of TPS) but it worked great for my application. Signal is clear and is giving me excellent tuning results. With a grain of salt: This TPS works with most aftermarket ECU systems being the 3 pin variable potentiometer type. So if you're here looking for something like that then this model will work for you. You will most likely need to make your own mount though..

Product fit and function good

My truck has been a pain in the butt to try and fix. Problems occurred on hwy trying to do 70mph. Noticed temperature gauge going high and noticed my truck didn't seem to have power to accelerate. Luckily made it home. However this when problem started. Coolant was bubbling in reservoir. Allowed truck go cook down and when I went to start truck sounded really rough. Put new thermostat in and thought that fixed problem but didn't. Truck felt week and hesitant to accelerate. After researching I thought it was MAF sensor which for a GMC Sonoma it's a pretty large size sensor. Installed that and replaced filter but truck was still bad. So after more research I end up buying a IAC sensor. The truck started smooth and no drop in RPM however when driving around neighborhood truck would not accelerate past 30mph. Turns out the TP sensor needed to be replaced. After installing the 2 new sensors the truck runs smoothly again. I returned the MAF sensor since old one still worked. So if you have Idling problem, loss of power, engine stalling, and check engine light comes out and it has a P0300 and P0101 or P0102 it's light those 2 or 3 sensors.

As a previous poster said, these die. This fixed it. These were my symptoms: The van would buck violently when I pressed the gas, so hardly that it blew out my new liquid filled motor mount. It would do this at the 1/2 shift point. Sometimes I would be able to let off the gas, let it shift, and I could go on. It would do this intermittently, sometimes going for weeks between. Sometimes it would buck once. Sometimes it would buck for a mile. Sometimes I shut it off, turned it on, it would work. Did it in very cold and hot weather. Seemed to do it most when it was wet and rainy, but sometimes on a clear sunny day. Every time it would be on a cold motor, and finally, the last time, I had my scanner hooked up to watch the TPS specifically. Yes, this confused me for at least 6 months. Wasn't going with anything less than ACDelco.

Start up not quite right

Fit perfect on my 1995 Grand Am. Stopped the problem with the check engine light coming ON after lifting my foot off the gas pedal. Got to the point where the idle was so fast that I was going 45 MPH without touching the gas. Easy to install with just one electrical connector and two T25 torks bolts. This is just a potentiometer (variable resistor) that tells the computer the position of the throttle plate. Probably fits a wide variety of GM vehicles.