Q: Throttle position sensor going out

asked by on January 21, 2016

The throttle position sensor in my car could be going out or is already bad.

If your vehicles throttle position sensor has gone bad then the vehicle may be put into reduced power mode. In reduced power mode the vehicle will not drive over a certain RPM and engine speed. Usually, a Check Engine light will be activated if this has occurred. A quick scan of the trouble codes by a knowledgable technician, such as one from YourMechanic, would shed some insight on the nature and source of the problem.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing


Experienced Mechanic?

Earn up to $70/hr

What others are asking

Soft brakes make me think they won’t work
Any unusual braking occurrences should be viewed as potentially serious. However, the symptom you describe is more indicative of a common issue Toyota had with the Tundra, causing them to issue a on it. It has to do with replacing...
Car making rattling noise
Sounds like you might need new struts. Struts perform the same function as shock absorbers. When they go bad, a dull rattle sound can be heard when going over bumps or uneven roads. The repair usually entails replacement of the...
Brakes caliper will not grab rotor
Hello and thank you for contacting YourMechanic. Check the caliper (https://www.yourmechanic.com/services/brake-caliper-replacement) for the piston sticking. Remove the pins (bolts that make the caliper a sliding caliper) and put some anti-seize on them and reinstall them. Recheck the brakes to see...
Car is not starting and overheating
Hi there. Usually if the engine starts to overheat it won't damage your cylinder heads unless excessive overheating has occurred. However, if the engine overheated, coolant that may have spilled over may have caused an ignition system issue that's preventing...
My car won't start. It tries but quickly sputters and dies
If this is something that seems to happen regularly after filling the fuel tank, you may have a problem with your evaporative emissions control system. Your car has a small purge valve called a purge solenoid (https://www.yourmechanic.com/services/evaporation-vent-solenoid-replacement) in the Evaporative...
If one u joint is used how will it affect transmission
Hi there. In order to answer your question, we need to know what year, make and model of vehicle you have along with any symptoms you are experiencing.
Coolant leaking outside on front passenger side
It sounds like your coolant overflow tank may be leaking as this is where it is usually located underneath the hood of the vehicle. If the leaking only occurs after driving the vehicle, it is likely that the radiator is...
My elctronic power steering stops working when im driving
If a rusted fuse were causing an intermittent connection, of course that might explain the periodic steering interruption. Simply replacing the fuse though won't be sufficient. The contacts in the fuse holder will have to be carefully cleaned of all...

Related articles

How to Buy a Classic Pontiac
Whether you want to buy a classic Pontiac for yourself or as a gift, here are some tips on buying one for a great value.
How to Replace the Speedometer Sensor on Most Cars
The speedometer has a sensor that fails if the speedometer or cruise control do not work, the Check Engine Light comes on, or the vehicle loses power.
How to Replace a Throttle Controller
The throttle controller uses data to open and close the throttle. Common signs of failure include poor performance, stalling, and and rough idling.