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Home >> Ford >> 1995 >> Aerostar Van Window, Standard >> Repair and Diagnosis >> Accessories & Equipment >> Cruise Control Systems >> Testing >> Set Speed Fluctuates

Set Speed Fluctuates

  1. Test actuator. See ACTUATOR CABLE  . If actuator is okay, go to next step. Replace actuator if defective.
  2. Test servo. See SERVO TEST  . If servo is okay, go to next step. Replace servo if defective. 3)Test vacuum dump valve. See VACUUM DUMP VALVE TEST  . Replace vacuum dump valve as necessary.
  3. Temporarily substitute known good amplifier, then retest system. If amplifier is okay, recheck all electrical and vacuum connections.
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