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Home >> Subaru >> 1989 >> RX Standard >> Repair and Diagnosis >> Engine Performance >> System >> System/Component Tests >> Idle Control System >> Dashpot >> Justy & MPFI
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Justy & MPFI

  1. Warm engine to operating temperature. With transmission in Neutral, open throttle until dashpot is fully extended.
  2. Allow throttle to slowly close. Ensure dashpot end contacts throttle lever between 2200-2400 RPM on Justy or 2800-3400 RPM on MPFI engines. If not, loosen locknut and adjust dashpot.