How to Replace a Throttle Position Sensor

The throttle position sensor (TPS) is used to inform the powertrain control module (PCM) of throttle position. The PCM uses this information to determine control of various output devices, such as the fuel injectors, transmission shift solenoids, etc. Basically, the throttle position sensor is a variable resistor. Its internal resistance and output signal voltage change in relation to throttle position. Some common symptoms of a failed throttle position sensor include hesitation, poor acceleration, rough idle, increased emissions and an illuminated Check Engine Light.

Materials Needed

Part 1 of 2: Removing the throttle position sensor

locating the throttle position sensor

Step 1: Locate the sensor. The throttle position sensor is mounted to the throttle body on top of the engine.

disconnect the negative battery cable

Step 2: Disconnect the negative battery cable. Disconnect the negative battery cable and set it aside.

removing the electrical connector

Step 3: Remove the sensor electrical connector. Remove the electrical connector by pushing down on the tab and sliding it off.

removing the sensor mounting screws

Step 4: Remove the sensor mounting screws. Remove the sensor mounting screws using a screwdriver.

removing the sensor mounting screws

Step 5: Remove the sensor. Remove the sensor from the engine.

Part 2 of 2: Installing the new throttle position sensor

Installing the new sensor

Step 1: Install the new sensor. Mount the new sensor in place.

installing the sensor mounting screws

Step 2: Install the sensor mounting screws. Install the sensor mounting screws by hand one at a time. Then tighten them down using a screwdriver.

reinstalling the electrical connector

Step 3: Reinstall the electrical connector. Reinstall the connector the same way you removed it.

reinstalling the battery negative cable

Step 4: Reinstall the negative battery cable. Reconnect the negative terminal to the battery.

adjusting the throttle position sensor

Step 5: Adjust the throttle position sensor as needed. While most throttle position sensors do not require adjustment, there are a few that do.

Typically, adjustment involves connecting a voltmeter with back probe leads to the sensor signal wire and ground. Then, with the engine running, loosen the sensor screws.

Rotate the sensor until the desired reading is achieved. If your vehicle requires throttle position sensor adjustment, consult the factory repair information for the exact specifications.

That’s what it takes to replace your throttle position sensor. If this seems like something you’d prefer to leave to a professional, YourMechanic offers expert throttle position sensor replacement performed at your home or office..

Next Step

Schedule Throttle Position Sensor (TPS) Replacement

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Recent Throttle Position Sensor (TPS) Replacement reviews

Excellent Rating


Rating Summary


22 years of experience
2006 reviews
22 years of experience
Chrysler 300M - Throttle Position Sensor - Westminster, California
On the first visit he ran a diagnostic , he then explained to me in detail what the codes indicated. We scheduled another appointment, he came out and installed the part two days later and my car runs great, thank you Chriss. We are going to schedule another appointment with Chriss for my Blazer.
Chevrolet Tahoe - Throttle Position Sensor - Huntington Beach, California
Excellent service! Chris took the time to call me prior to my appointment to go over the issue I was having to be sure he was picking up the correct parts. He gave me the option to try are fix the existing part or replace the part, and went through both scenarios with me prior to my appointment. Chris showed up early, and made sure my car was good as new before leaving. I would recommend Chris to all of my family and friends for efficient and honest service. The convenience Your Mechanic provides is worth it in itself, and their prices are also much more competitive than local auto shops.


33 years of experience
1001 reviews
33 years of experience
Chevrolet Cobalt - Throttle Position Sensor (TPS) Replacement - Newport News, Virginia
Matthew was amazing! He was punctual, incredibly nice, worked quickly, and explained everything thoroughly. This was my first time using YourMechanic and Matthew’s services guaranteed that I’ll be using them again in the future.
Ford Focus - Throttle Position Sensor (TPS) Replacement - Williamsburg, Virginia
Matt did an excellent job explaining the job and gave really wonderful recommendations. I will definitely use him again and refer him and your mechanic to people I know. the


33 years of experience
441 reviews
33 years of experience
Honda Accord - Throttle Position Sensor - Sacramento, California
AWESOME AWESOME AWESOME!!!!!!! VERY friendly and knows what he's doing!!!! He goes above and beyond to get the job done right the FIRST time. I HIGHLY recommend Jeff!!! I'll be booking all my car needs with Jeff from now on.
Lincoln Aviator - Throttle Position Sensor (TPS) Replacement - Sacramento, California
Outstanding! Jeff is an extremely pleasant gentleman, and he graciously answered any questions that I posed to him. I will use this service in the future, and recommend this service to people I know.


39 years of experience
862 reviews
39 years of experience
Ford Taurus - Throttle Position Sensor - Norcross, Georgia
I was very happy with my experience. He was prompt, knowledgeable, and did the job with no problems. However, my check engine light came on again after driving four miles, so I believe there is another problem not related to the service I received. Dan may hear from me again when I find out what's goin g on now. Thanks!
Hyundai Sonata - Throttle Position Sensor - Suwanee, Georgia
Dan was fantastic. He was early, and did a great job. He was extremely professional and knowledgeable. The service was very convenient, and much cheaper than the price I was quoted at local mechanic. I recommend Dan to anyone, you will not be disappointed.

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