SERVICING INFORMATION 8-5
Complaint Symptom and possible causes Remedy
Engine stalls often Incorrect fuel/air mixture
1. Defective intake air pressure sensor or circuit.
2. Clogged fuel filter.
3. Defective fuel pump.
4. Defective fuel pressure regulator.
5. Damaged or cracked vacuum hose.
6. Defective engine coolant temp. sensor.
7. Defective thermostat.
8. Defective intake air temp. sensor.
Fuel injector improperly operating
1. Defective fuel injector.
2. No injection signal from ECM.
3. Open or short circuited wiring connection.
4. Defective battery or low battery voltage.
Control circuit or sensor improperly operating
1. Defective ECM.
2. Defective fuel pressure regulator.
3. Defective throttle position sensor.
4. Defective intake air temp. sensor.
5. Defective camshaft position sensor.
6. Defective crankshaft position sensor.
7. Defective engine coolant temp. sensor.
8. Defective fuel pump relay.
Engine internal parts improperly operating
1. Fouled spark plugs.
2. Defective crankshaft position sensor or ECM.
3. Clogged fuel hose.
4. Tappet clearance out of adjustment.
Repair or replace.
Clean or replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Repair or replace.
Repair or replace.
Replace or recharge.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Clean.
Replace.
Clean.
Adjust.