Skip the auto shop - Our mechanics make house calls

Q: The throttle position sensor has been replaced three times on a 2003 Buick lesabre. What is causing it to go bad?

asked by on

What keeps making the sensor constantly go bad. Should premium unleaded gas be used instead of regular unleaded gas like I've been using? The car shuts off while driving and then it over compensates and runs the engine too fast messing up the transmission shifting. What would cause the part keep going bad.

My car has 65000 miles.

Within conventional throttle position sensors there are metal contacts that sweep across a printed resistor board. Repetitive motion and vehicle vibration can cause these contacts to wear, over time, eventually causing sensor malfunction. If you are sure that the TPS itself, and not something else such as a loose connector, has failed in other like "repetitive part failure" scenarios, the best thing to do is buy the OEM GM part from the dealer. You should test the TPS and replace if indicated. If you want these steps performed by a certified Mechanic, dispatched by YourMechanic right to your location, please request a TPS sensor diagnostic/inspection and the responding certified mechanic will get this resolved for you. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  • Home
  • Questions
  • The throttle position sensor has been replaced three times on a 2003 Buick lesabre. What is causing it to go bad?

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

Get a quote

What others are asking

Q: Blower motor

Hi There, It sounds like you may have a pinched wire or something causing the AC blower motor to quit working as you turn the wheel. This may also be related to an intermittently working or faulty blower motor relay....

Q: I have an 05 Buick terraza will drive but when hits 2 ND gear it's like putting it in neutral.

Claimed by Marvin Sunderland

Q: How to replace low pressure ac service port.

Hi there. It is probably best to purchase a service and repair manual for your Olds Alero to learn how to complete this rather complex and complicated job. If you'd like some help with this job, feel free to set...

Related articles

Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.