GM Buick/Oldsmobile/Pontiac/Full-Size 1975-1990 Repair Guide

Transducer

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See Figure 1

REMOVAL & INSTALLATION



  1. Disconnect the vacuum and electrical connections and the speedometer cables.
  2.  
  3. Remove the attaching screws and remove the transducer.
  4.  
  5. Installation is the reverse of removal.
  6.  

ADJUSTMENT



  1. Drive the vehicle at 55 mph and engage the cruise control.
  2.  
  3. If the car cruises below the engagement speed, screw the orifice tube outward.
  4.  
  5. If the car cruises above the engagement speed, screw the orifice tube inward.
  6.  

Each1/4turn of the orifice tube will change cruise speed approximately 1 mph.



Click image to see an enlarged view

Fig. Fig. 1: Common transducer mountings

 
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