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Speedometer Sending Unit

  1. If speedometer and odometer do not operate, check for improperly connected speedometer cable, broken speedometer cable or damaged driven gear.
  2. If speedometer needle bounces, check for broken hair spring or oil in speedometer head. If speedometer does not return to zero or will not exceed a certain point, check for oil or foreign material in speedometer head or for deformed hair spring.
  3. If speedometer needle deflects, check for improper speedometer cable arrangement or damaged worm rotor or bearing. If speedometer operates, but odometer does not operate, replace defective gears in speedometer.