Symptom Checks
WARNING: This page is about a different car, the 1995 Ford RV Cutaway, 1995 Ford Econoline, 1995 Ford Cutaway, and 1995 Ford Club Wagon. 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. If code is present, perform appropriate CIRCUIT TEST.
- Check RPM drop using step 2) of CIRCUIT TEST S, or power to MAP/BARO sensor using step 3) of CIRCUIT TEST S. See appropriate TESTS W/CODES - EEC-IV article below.
- TESTS W/CODES - EEC-IV (4.9L)
- TESTS W/CODES - EEC-IV (5.0L)
- TESTS W/CODES - EEC-IV (5.8L)
- TESTS W/CODES - EEC-IV (7.5L)
- Check ignition system. See IGNITION SYSTEMS in appropriate I - SYSTEM & COMPONENT TESTING article below.
- SYSTEM/COMPONENT TESTS - EEC-IV (4.9L)
- SYSTEM/COMPONENT TESTS - EEC-IV (5.0L)
- SYSTEM/COMPONENT TESTS - EEC-IV (5.8L)
- SYSTEM/COMPONENT TESTS - EEC-IV (7.3L DIESEL)
- SYSTEM/COMPONENT TESTS - EEC-IV (7.5L)
- Check idle speed. See IDLE SPEED & MIXTURE in appropriate ADJUSTMENTS article below.
- ADJUSTMENTS - 4.9L
- ADJUSTMENTS - 5.0L
- ADJUSTMENTS - 5.8L
- ADJUSTMENTS - 7.3L DIESEL
- ADJUSTMENTS - 7.5L
- Check fuel delivery and fuel pump. See FUEL SYSTEM in appropriate TESTS W/CODES - EEC-IV article below.
- Check Positive Crankcase Ventilation (PCV) system. See EMISSION SYSTEMS & SUB-SYSTEMS in the appropriate appropriate I - SYSTEM & COMPONENT TESTING article below.
- Ensure engine operates at normal operating temperature.
- Check Exhaust Gas Recirculation (EGR) system. See EMISSION SYSTEMS & SUB-SYSTEMS in appropriate I - SYSTEM & COMPONENT TESTING article below.
- Check engine mechanical condition. Check compression, camshaft, valve train components, intake manifold gaskets, etc.
- Check air injection. See EMISSION SYSTEMS & SUB-SYSTEMS in appropriate I - SYSTEM & COMPONENT TESTING article below.
- Check air intake system. Ensure throttle plate and linkages operate properly.
- Check Fuel Evaporation (EVAP) system. See EMISSION SYSTEMS & SUB-SYSTEMS in appropriate I - SYSTEM & COMPONENT TESTING article.
- SYSTEM/COMPONENT TESTS - EEC-IV (4.9L)
- SYSTEM/COMPONENT TESTS - EEC-IV (5.0L)
- SYSTEM/COMPONENT TESTS - EEC-IV (5.8L)
- SYSTEM/COMPONENT TESTS - EEC-IV (7.3L DIESEL)
- SYSTEM/COMPONENT TESTS - EEC-IV (7.5L)
- Check for restricted exhaust system.