How to Replace Throttle Position Sensor | YourMechanic Advice

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.

There’s no definitive lifetime of a TPS as it’s built to survive the lifetime of your vehicle. Some common symptoms of a failed throttle position sensor include hesitation, poor acceleration, rough idle, increased emissions and an illuminated Check Engine Light. If you have any of these symptoms, you want to make sure you buy a quality throttle position sensor as a replacement. This article goes into detail with a step-by-step guide on how to replace a throttle position sensor.

Materials Needed

  • Back probe leads (optional)
  • Free repair manuals provides free online repair manuals for certain makes and models
  • Protective gloves
  • Safety glasses
  • Screwdriver
  • Voltmeter (optional)

Part 1 of 2: Locating & 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 and set it aside.

removing the electrical connector

Step 3: 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 using a screwdriver.

removing the sensor mounting screws

Step 5: Remove the throttle position 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 by hand one at a time. Then tighten them down using a screwdriver.

reinstalling the electrical connector

Step 3: 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 throttle position 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. Changing a TPS is fairly simple for some, but 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.


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Recent Throttle Position Sensor (TPS) Replacement reviews

Excellent Rating

(133)

Rating Summary
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Matthew

34 years of experience
1438 reviews
Matthew
34 years of experience
Toyota RAV4 L4-2.0L - Throttle Position Sensor - Norfolk, Virginia
Matthew is a true professional and provides extreme knowledge in his field along with exceedingly great service with a smile.
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.

Jeff

34 years of experience
441 reviews
Jeff
34 years of experience
Honda Accord L4-2.3L - 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.

Joseph

21 years of experience
718 reviews
Joseph
21 years of experience
Ford Taurus V6-3.0L - Throttle Position Sensor (TPS) Replacement - Salt Lake City, Utah
Joseph is a fantastic mechanic. I've worked with for years on my vehicles. He's quick, courteous and knowledgeable.

Chuy

15 years of experience
503 reviews
Chuy
15 years of experience
Buick Rendezvous V6-3.4L - Throttle Position Sensor (TPS) Replacement - Brookfield, Illinois
Chuy was on time, respectful, and informative. He explained what he was doing and told me what to look for in the future.

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