Chrysler Full-Size Trucks 1967-1988 Repair Guide

Throttle Position Sensor

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The Throttle Position Sensor (TPS) is an electronic resistor which is activated by the movement of the throttle shaft. It is mounted on the throttle body and senses the angle of the throttle blade opening. The voltage increases or decreases according to the throttle blade opening. This voltage is transmitted to the SMEC, where it is used along with data from other sensors to adjust the air/fuel ratio to varying conditions.

REMOVAL & INSTALLATION



See Figure 1

  1. Disconnect the negative battery cable.
  2.  
  3. Remove the air cleaner.
  4.  
  5. Unplug the three way connector at the throttle position sensor.
  6.  
  7. Remove the two screws mounting the throttle position sensor to the throttle body.
  8.  
  9. Lift the throttle position sensor off the throttle shaft.
  10.  



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Fig. Fig. 1: Remove the throttle position sensor from the throttle shaft

To install:
  1. Install the throttle position sensor on the throttle body. Position the connector toward the rear of vehicle.
  2.  
  3. Torque sensor to 27 inch lbs. (3 Nm).
  4.  
  5. Engage the three way connector to the throttle position sensor.
  6.  
  7. Install the air cleaner.
  8.  
  9. Connect the negative battery cable.
  10.  

 
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