1. Gather the Necessary Tools and Parts
- Replacement throttle position sensor (TPS)
- Socket wrench set
- Screwdriver
- Multimeter or voltage tester
2. Disconnect Battery
- Open the hood of the vehicle and disconnect the negative terminal of the battery.
3. Locate the TPS
- The TPS is usually mounted on the throttle body. It is a small, black sensor with a connector attached to it.
4. Remove TPS
- Use a socket wrench to remove the bolts holding the TPS in place. Carefully disconnect the electrical connector.
5. Install the Replacement TPS
- Position the new TPS in place and align the mounting holes.
- Secure the TPS with the bolts you removed earlier.
- Reconnect the electrical connector.
6. Reconnect Battery
Reconnect the negative terminal of the vehicle's battery.
7. Reset Idle Air Control (IAC) Valve
- With the engine off, turn the ignition key to the "ON" position, but do not start the engine.
- Wait 10 seconds and then turn the ignition key to the "OFF" position.
- Repeat this process twice.
- This procedure resets the IAC valve, which helps maintain proper idle speed.
8. Test the TPS
- Start the vehicle and let it run at idle.
- Use a multimeter or voltage tester to check the output voltage of the TPS at different throttle positions. The voltage should increase smoothly as the throttle valve is opened.
- If the voltage is not within the specified range, or if the TPS response is erratic, the TPS may need to be replaced or adjusted.
NOTE: The specific steps and procedures may vary slightly depending on the exact model and year of the Buick Park Avenue you have. It's always recommended to consult a reliable repair manual or seek professional assistance if you are not confident in performing the repair yourself.
