LEMON Manuals: Even more car manuals for everyone
Home >> Oldsmobile >> 1990 >> Custom Cruiser >> Repair and Diagnosis >> Engine Performance >> Engine Controls - Adjustments - V8 >> Ignition Timing >> 4.5L (VIN 3)

4.5L (VIN 3)

  1. Place transmission in Park. Start engine and warm to normal operating temperature. Turn diagnostic display, A/C and all accessories off. Connect timing light to No. 1 spark plug wire. Connect tachometer.
  2. Ground ALDL test connector, located under driver's side dash. "Set Timing" message should appear on the Driver Information Center (DIC). This indicates ECM is in set timing mode.
  3. Adjust ignition timing to specification. See IGNITION TIMING SPECIFICATIONS  table. Tighten distributor housing and recheck timing. Remove jumper from ALDL test connector.
scientia non olet · About LEMON Manuals