What is a TPS? (Throttle Position Sensor)
September 13, 2020
You know you have an accelerator pedal; step on it and your vehicle is supposed to go. But did you know there is a part in your vehicle that keeps track of where the throttle is? It's called the Throttle Position Sensor, or TPS.
The TPS is a sensor that helps your vehicle figure out the right mix of air and fuel is reaching your engine. It does that by keeping track of the throttle and sending that information to your vehicle's computer. Other factors play a role in how well your engine is performing, including air temperature, how fast the engine is turning over and air flow.
When the TPS isn't working right, you may find your vehicle won't accelerate or doesn't have the power you're expecting when you press on the accelerator. In some cases, it may accelerate on its own. Sometimes your vehicle won't go over a certain speed. Your Check Engine light may go on.
Any of these symptoms should be checked out soon. If your TPS stops working right, your vehicle may not be safe to drive. Fortunately, most vehicles have a "limp home" mode that will allow you to get off a busy road to a safe spot.
Your service advisor can let you know which TPS is the correct replacement for your vehicle. Your shop may have to re-program the new TPS so it works correctly with other software in your vehicle.
It's a fact of life these days that computers control many of a vehicle's functions. The sensors that feed information to those computers help make your vehicle work the way it was engineered to and keep you motoring down the road safely and efficiently.
Charlie's Fast Lube Sikeston
2017 E. Malone
Sikeston, Missouri 63801
573-472-1139
http://www.charliesfastlubesikeston.com
Need Service?
More articles from Charlie's Fast Lube Sikeston

Steering You Right (Tie Rod End Replacement)
March 1, 2026
For drivers, S stands for safety. And there are three other words that start with S that are all equally important: starting, stopping and steering. For your vehicle to be at its safest, all three functions must be in top shape. Steering is one of those things we take for granted. After all, y... More

Before You Buy a Used Vehicle (Car Inspection before Buying a Used Vehicle)
February 22, 2026
Before You Buy a Used Vehicle (Car Inspection before Buying a Used Vehicle) Perhaps this sounds familiar. Your vehicle seems like its been around forever, and youve decided its time to move on. But when you check the price of new vehicles, the sky-high price tags have you considering a nice, pre... More

Emergency! (Vehicle Emergency items)
February 15, 2026
"I never expected it could happen to me." Countless drivers have said that after they've had an emergency turn their lives upside down. So before that happens to you, let's thinking about planning ahead for an emergency with a few things you should keep in your vehicle. Road flares. If you've ev... More
