Symptom Checks
WARNING: This page is about a different car, the 1995 Ford Bronco. However, it is still accessible from the selected car via links, so may be relevant.
Perform the following:
- Perform QUICK TEST. See appropriate TESTS W/CODES - EEC -IV article below. If code is present, perform appropriate CIRCUIT TEST.
- TESTS W/CODES - EEC-IV (5.0L)
- TESTS W/CODES - EEC-IV (5.8L)
- Check power to MAP/BARO sensor. See step 3) of CIRCUIT TEST S in appropriate TESTS W/CODES - EEC-IV article below.
- Check ignition system. See IGNITION SYSTEMS in appropriate appropriate SYSTEM/COMPONENT TESTS article below.
- Check fuel delivery system. See FUEL SYSTEM in appropriate appropriate SYSTEM/COMPONENT TESTS article below.
- Check for restricted exhaust system.
- Ensure engine operates at normal operating temperature.
- Check air intake system. Ensure throttle plate and linkages operate properly.
- Check engine mechanical condition. Check compression, camshaft, valve train components, etc.
- Ensure transmission is functioning properly.
- Check for binding/dragging brakes.
- Ensure A/C turns off during Wide Open Throttle (WOT).
- Check customer driving habits.
- SYSTEM/COMPONENT TESTS - EEC-IV (5.0L)
- SYSTEM/COMPONENT TESTS - EEC-IV (5.8L)