Ford Freestar, Monterey 2004

Throttle Position Sensor



The TPS is a rotary potentiometer sensor that provides a signal to the PCM that is linearly proportional to the throttle plate/shaft position. The sensor housing has a 3-blade electrical connector that may be gold plated. The gold plating increases the corrosion resistance on the terminals and increases the connector durability. The TPS is mounted on the throttle body. As the TPS is rotated by the throttle shaft, 4 operating conditions are determined by the PCM from the throttle position. The operating conditions are:

Closed throttle (includes idle or deceleration)
Part throttle (includes cruise or moderate acceleration)
Wide open throttle (includes maximum acceleration or de-choke on crank)
Throttle angle rate

Removal & Installation

  1. Disconnect the battery ground cable.
  3. Disconnect the Throttle Position Sensor (TPS) electrical connector.
  5. Detach the harness retainer from the stud bolt.
  7. Remove the 2 TPS bolts and the TPS.
  9. To install, reverse the removal procedure. Tighten the TPS bolts to 62 inch lbs. (7 Nm).