Diagnostic Aids

Check ignition system for a malfunction, including spark plugs, spark plug wires, and ignition coil. Ensure injector resistance is 12 ohms, secondary coil resistance at 8000-15,000 ohms and spark plug gap at 0.045".

Check for conditions or faulty components which could cause an engine misfire. See appropriate TROUBLE SHOOTING - NO CODES article. An intermittent malfunction may be caused by a poor connection, rubbed-through wire insulation, or a wire broken inside insulation. Inspect harness connectors for backed-out terminals, improper mating, broken locks, improperly formed or damaged terminals, or poor terminal-to-wire connections before component replacement.