What is a TPS? (Throttle Position Sensor)
August 30, 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 Poplar Bluff
2020 N. Westwood Blvd
Poplar Bluff, Missouri 63901
573-686-5585
http://www.charliesfastlubepoplarbluff.com
Need Service?
More articles from Charlie's Fast Lube Poplar Bluff

Round and Round (Wheel Balancing)
June 9, 2025
In a perfect world, all wheels and tires would be perfectly round and weigh exactly the same at every point of the wheel. Unfortunately, they're not, and if they're out of balance, they can reduce the lifespan of your tires, make your vehicle shake like a carnival ride, and maybe even damage a f... More

That Vexing Vapor Venting (Vapor Coming out of Vents)
June 2, 2025
You may have noticed sometimes on a hot and humid day, vapor will come out of your vehicle's vents when you have the air conditioning on. Is that something to be concerned about? Well, it depends. Sometimes that steam or vapor can be caused by water accumulating in the vent system after it has c... More

Breathe Easier (Cabin Air Filter)
May 26, 2025
When you get in your vehicle, how does it smell? If it's not so nice, it may be time to have your cabin air filter changed. It's not the same one that filters out the air used in the engine. The cabin air filter screens out dust and other particulates from the outside air so when it enters the c... More