What is a TPS? (Throttle Position Sensor)
February 18, 2024
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.
TLC Custom Exhaust Brakes & Tires
1735 N Main St
Royal Oak, Michigan 48067
248-541-8300
http://www.tlcautocareroyaloak.com
Need Service?
More articles from TLC Auto Care

You Are the Fluid Detective! (Leaking Fluids)
March 15, 2026
When you see some liquid sitting underneath your vehicle, your mind starts churning. Is that normal? Is that something serious, or did I just spill my drink? Heres a quick list of what those fluids look, smell and feel like, as well as what they might be. No, we dont recommend you taste them to ... More

Don?t Be Hosed (Radiator Hose Replacement)
March 8, 2026
If you are like most drivers, you dont worry too much about what shape your radiator hoses are in. But they are a vital part of your coolant system, helping carry engine coolant from the hot engine to where it is cooled off in the radiator. When the cooling system has a problem, you will likel... More

Avoiding Exhaustion (EGR Valve Replacement)
March 1, 2026
No, ERG isnt the sound a pirate makes. Its a part in your vehicle that recirculates exhaust gas to reduce certain gases and pollutants in the atmosphere. In fact, ERG stands for Exhaust Gas Recirculation. One gas our vehicles may make when they burn fuel is nitric oxide, which can play a big ro... More
