How to Replace the Throttle Position Sensor in Vehicles

by Contributing Writer

The throttle position sensor mounted on the throttle body of a Vehicles is used by the computer to determine how much air is coming into the engine. In turn, it adjusts the fuel going into the engine accordingly, to achieve a perfect air to fuel ratio. When this sensor fails, the computer won't know how to properly tune the engine, and will run poorly because of it. To fix the problem, you have to replace the sensor with a new one.

Under The Hood:

 How to Replace the Throttle Position Sensor in a Dodge Ram 1500

Make sure the engine and radiator are completely cool before starting this procedure. Disconnect the battery ground and then isolate it.

Take the air cleaner assembly off the engine and set it aside. Disengage the Throttle Position Sensor (TPS).

Loosen and remove the bolts that secure the throttle position sensor. Note the orientation of the TPS and then take the TPS off the throttle body.

Position the new TPS on the throttle body. Orient the new TPS exactly as the previous one. Put the fasteners in place and torque them to 50 inch pounds.

Check the throttle for binding by opening it to "wide open" and then closing it several times to assure proper operation. Plug in the throttle position sensor connector.

Replace the air cleaner assembly. Attach the battery ground cable to the terminal.

Items you will need

  • Mechanic's toolset, including a full socket set, wrenches, screwdrivers

  • Replacement gasket

  • Torque wrench

  • Plastic scraper

 How to Replace the Throttle Position Sensor in a Kia Spectra

Make sure the engine and radiator are completely cool. Disconnect the battery ground and then isolate it so that it cannot make accidental contact with the terminal while installing the throttle body.

Disengage the Throttle Position Sensor (TPS). Loosen the screws that hold the TPS in place. Remove the screws and lift the TPS from the mounting.

Install the new sensor on the mounting. Set the screws in place and tighten them to secure the TPS.

Check the throttle for binding: depress the accelerator to the floor and then release it. Do this a few times to make sure the throttle is operating smoothly.

Reconnect the battery ground cable to the terminal. Start the engine to assure proper performance.

Items you will need

  • Mechanic's toolset, including a full socket set, wrenches, screwdrivers

  • Plastic scraper

  • Replacement gasket

 How to Replace the Throttle Position Sensor in a Honda CR-V

Remove the air cleaner, using a 10 mm socket and ratchet. Disconnect the electrical connector on the throttle position sensor. The sensor is on the same shaft on which the throttle linkage is hooked up, but on the opposite side.

Remove the two small bolts securing the throttle position sensor to the throttle body, using the appropriate-size socket. Lift the sensor away from the throttle body.

Look at the tab on the throttle body where the sensor gets positioned. Open the throttle slightly with one hand, and watch the way the tab turns. Look at the tab on the back of the sensor. With a finger, push the little tab to see which way it rotates. When the sensor is installed, the tab on the sensor must go above the tab on the throttle body so that when the throttle is opened, the tab on the throttle body moves the tab on the sensor. If the sensor is installed with the sensor's tab under the tab on the throttle body, the sensor tab will not be moved when the throttle body tab moves. Install the throttle position sensor, paying particular attention to the tabs.

Install the two bolts in the throttle position sensor, but leave them loose so that the throttle position sensor can be adjusted. Connect the electrical connector.

Connect the voltmeter, with the red lead connected to the left wire on the two-wire electrical connector. Connect the black lead to any good ground. Turn the ignition switch on, but keep the engine off. Observe the voltmeter. Rotate the sensor until it produces a reading of .5 volts on the voltmeter. Tighten the two bolts with the ¼-inch socket to hold it in place. Replace the air cleaner.

Items you will need

  • Set of ¼-inch drive sockets

  • ¼-inch drive ratchet

  • Voltmeter

 How to Replace the Throttle Position Sensor in a 1995 Chevy Silverado

Pop the hood. Remove the air filter from the top of the engine using your hands to take off the wing nut holding it to the throttle body. Locate the throttle position sensor on the passenger side of the throttle body and disconnect the electrical connection to it using your hands.

Remove the sensor from the throttle body using the torx-head driver. Twist it out of the throttle body and remove the sensor and the seal.

Place the replacement throttle position sensor seal onto the throttle body. Install the throttle position sensor and then twist it 90 degrees to lock it into the mounting screws. Bolt it in place using the torx-head driver. Plug it back in place and reinstall the air cleaner.

Items you will need

  • Replacement throttle position sensor and seal

  • Torx-head driver set

 How to Replace the Throttle Position Sensor in a Dodge Durango

Wait until the engine is completely cool. Disconnect the negative battery cable. Remove the air cleaner assembly and set it aside.

Unplug the throttle position sensor connector. Loosen and remove the two retaining bolts. Remove the throttle position sensor from the throttle body on the intake manifold assembly.

Install the new sensor to the throttle body on the intake manifold. Check the threads on the bolts and use a small wire brush to clean them as needed. Set the sensor bolts in position and tighten them by hand. Torque the bolts to 60 inch pounds.

Open the throttle to wide open and then close it. Do this several times to make sure that that the throttle is operating smoothly with no binding.

Plug in the connector. Install the air cleaner assembly. Reconnect the negative battery cable.

Start the engine and allow it to run for several minutes. Check for proper performance.

Items you will need

  • Mechanic's toolset

  • New gaskets for the throttle body