Symptom Checks

Check the following items:

• Perform QUICK TEST. See G - EEC-IV TESTS W/CODES article in the ENGINE PERFORMANCE Section. If code is present, perform appropriate CIRCUIT TEST.
• Check fuel delivery system. See FUEL SYSTEM in I - EEC-IV SYS/COMP TESTS article in the ENGINE PERFORMANCE Section.
• Check ignition system. See IGNITION SYSTEMS in I - EEC-IV SYS/COMP TESTS article in the ENGINE PERFORMANCE Section.
• Check for restricted exhaust system.
• Ensure engine operates at normal operating temperature.
• Check EGR system. See I - EEC-IV SYS/COMP TESTS article in the ENGINE PERFORMANCE Section.
• Ensure transmission operates properly.
• Check secondary air injection. See I - EEC-IV SYS/COMP TESTS article in the ENGINE PERFORMANCE Section.
• Check PCV system.
• Check for dragging brakes.
• Check for contaminated Mass Airflow (MAF) sensor.