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Home >> Oldsmobile >> 1991 >> Toronado Base >> Repair and Diagnosis >> Engine Performance >> Engine Controls - Adjustments - V6 >> V6 Idle Speed >> All Models

All Models

  1. Install "Scan" tester to ALDL test connector located under driver's side of dash. Start and run engine to normal operating temperature. Observe Idle Air Control (IAC) counts. See MINIMUM IDLE SPEED (V6) table.
  2. If IAC counts are incorrect, use an awl to pierce cover of minimum idle stop screw. Apply leverage to remove cover. Turn idle stop screw out until screw clears linkage. Turn screw in until screw touches linkage. Turn screw in an additional 1 1/2 turns.
  3. Turn idle stop screw in to decrease IAC counts. Turn screw out to increase IAC counts. If minimum idle speed correction requires more than 1/2 turn (in or out) of idle stop screw, check for vacuum leaks or dirty throttle plate. Clear any trouble codes.
MINIMUM IDLE SPEED

Application IAC Counts
All Models 10-20
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