GM: Electra/Park Avenue/Ninety-Eight 1990-1993

Dual Crank Sensor

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REMOVAL & INSTALLATION



  1. Disconnect the negative battery cable.
  2.  
  3. Remove the belt(s) from the crankshaft pulley.
  4.  
  5. Raise and support the vehicle safely.
  6.  
  7. Remove the right front wheel and inner fender access cover.
  8.  
  9. Remove the crankshaft harmonic balancer retaining bolt, then remove the harmonic balancer.
  10.  
  11. Disconnect the sensor electrical connector.
  12.  
  13. Remove the sensor and pedestal from the engine block, then separate the sensor from the pedestal.
  14.  

To install:

  1. Loosely install the crankshaft sensor to the pedestal.
  2.  
  3. Using tool J-37089 or equivalent, position the sensor with the pedestal attached, on the crankshaft.
  4.  
  5. Install the pedestal-to-block retaining bolts. Tighten and torque to 14-28 ft. lbs. (20-40 Nm).
  6.  
  7. Torque the pedestal pinch bolt 30-35 inch lbs. (20-40 Nm).
  8.  
  9. Remove tool J-37089 or equivalent.
  10.  
  11. Place tool J-37089 or equivalent, on the harmonic balancer and turn. If any vane of the harmonic balancer touches the tool, replace the balancer assembly.
  12.  

A clearance of 0.025 inch is required on either side of the interrupter ring. Be certain to obtain the correct clearance. Failure to do so will damage the sensor. A misadjusted sensor of bent interrupter ring could cause rubbing of the sensor, resulting in potential driveability problems, such as rough idle, poor performance, or a no start condition.

  1. Install the balancer on the crankshaft. Install the balancer retaining bolt. Tighten and torque the retaining bolt to 200-239 ft. lbs. (270-325 Nm).
  2.  
  3. Install the inner fender shield.
  4.  
  5. Install the right front wheel assembly. Tighten and torque the wheel nuts to 100 ft. lbs. (140 Nm).
  6.  
  7. Lower the vehicle.
  8.  
  9. Install the belt(s).
  10.  
  11. Reconnect the negative battery cable.
  12.  

 
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