Pontiac Fiero 1984-1988 Repair Guide

Speedometer Sensor

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REMOVAL & INSTALLATION



Automatic Transaxle


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Fig. Fig. 1 Location of the speed sensors on the manual and automatic transmissions

  1. Disconnect the negative (-) battery cable.
  2.  
  3. The speed sensor is located on top of the governor assembly, horizontally mounted.
  4.  
  5. Disconnect the electrical connector from the speed sensor.
  6.  
  7. Remove the sensor retaining clip.
  8.  
  9. Remove the sensor by gently twisting and pulling it out of the governor housing.
  10.  

To install:

  1. Install a new O-ring on the sensor and lubricate with transmission fluid.
  2.  
  3. Install the drive gear to the sensor and position assembly into the governor housing.
  4.  
  5. Insert the retaining clip into the housing and reconnect the electrical connector.
  6.  
  7. Reconnect the negative (-) battery cable and drive the vehicle to check for proper operation.
  8.  

Manual Transaxle
  1. Disconnect the negative (-) battery cable.
  2.  
  3. The speed sensor is located on top of the differential portion of the transaxle housing, vertically mounted.
  4.  
  5. Remove the sensor bolt and retainer.
  6.  
  7. Disconnect the electrical connector from the sensor.
  8.  
  9. Remove the sensor by gently twisting and pulling it out of the transaxle.
  10.  

To install:

  1. Install a new O-ring seal on the sensor and lubricate with automatic transmission fluid.
  2.  
  3. Install the drive gear to the sensor and position assembly into the transaxle housing.
  4.  
  5. Install the sensor retainer and bolt. Torque the bolt to 45 inch.lb. (5 Nm).
  6.  
  7. Reconnect the electrical connector and negative (-) battery cable.
  8.  
  9. Drive the vehicle to check for proper operation.
  10.  

 
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