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Home >> Oldsmobile >> 1988 >> Toronado Base >> Repair and Diagnosis >> Engine Performance >> System >> Fuel Injection System - Multi-Port >> Trouble Shooting >> Symptoms >> Cuts Out, Misses
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Cuts Out, Misses

  1. Disconnect IAC motor. Start engine. Using insulated pliers, remove one spark plug at a time and note RPM. If RPM drops within 50 RPM on all cylinders, proceed to ROUGH, UNSTABLE IDLE symptom in this article.
  2. Check ignition system and cylinder compression if no RPM change was noted or exceeded 50 RPM. Repair as necessary.
  3. Disconnect all injector wiring connectors. Install Injector Test Light (J034730-2) between connector terminals. Note light while cranking. Test light should blink during cranking. Check injector drive circuit if light fails to blink.
  4. Check for restricted fuel filter or fuel contamination. Check fuel pressure. See appropriate A-7 FUEL SYSTEM DIAGNOSIS CHART in COMPUTERIZED ENGINE CONTROL section.
  5. Perform injector balance. See appropriate C-2A INJECTOR BALANCE TEST in COMPUTERIZED ENGINE CONTROL section. Check ignition system. Check for worn or damaged engine components.
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