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Home >> Plymouth >> 1981 >> Sapporo Standard Trans >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Throttle Opener System >> Adjustments >> Throttle Opener Operating Speed
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Throttle Opener Operating Speed

  1. Connect tachometer to engine and warm engine to normal operating temperature. Set engine idle speed to specifications. Turn air conditioner and accessories off. On front-wheel drive models, disconnect engine cooling fan.
  2. Activate throttle opener (air conditioning "ON") and adjust throttle opener speed to specified RPM shown in table by turning throttle opener adjusting screw. See Fig 1.
  3. With throttle opener speed set to specifications, turn air conditioner "OFF" and recheck idle speed. Normal engine idle speed should not be affected when throttle opener is not activated.
    Throttle Opener Specifications

    Application Operating Speed (RPM)
    1400 cc Engine 1050-1150
    1600 cc Engine
      Man. Trans. 1050-1150
      Auto. Trans. 1100-1200
    2000 cc Engine 950-1050
    2600 cc Engine 1000-1100
    Fig 1: Throttle Opener System
    G09313824Courtesy of CHRYSLER GROUP, LLC
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