1989-Montero · fuel system · страница 7 из 53 · Открыть оригинал PDF ↗
| Symptom | Probable cause | Remedy |
|---|---|---|
| Poor fuel mileage | Enrichment valve kept open | Repair or replace |
| Auxiliary acceleration pump is in operation-hot engine | Repair or replace | |
| FBC system Engine coolant temperature sensor malfunction | Check by using checker (MD998406) (Check component and replace if faulty) | |
| Oxygen sensor malfunction | Check by using checker (MD998406) (Check component and replace if faulty) | |
| Feedback solenoid valve malfunction | Check drivesignal by using checker (MD998406) Check component | |
| Slow-cut solenoid valve malfunction | Check drive signal by using checker (MD998406) Check components | |
| Throttle position sensor malfunction | Check component and adjust | |
| Engine speed sensor malfunction | Check by using checker (MD998406) check harnesses for continuity | |
| Harness broken/short circuited or connector not connected properly | Repair or replace |
FUEL TANK AND FUEL LINE
| Symptom | Probable cause | 1 Remedy |
|---|---|---|
| Engine malfunctions due to insufficient | Bent or kinked fuel pipe or hose | Repair or replace |
| fuel supply | Clogged fuel pipe or hose | Clean or replace |
| Clogged fuel filter or in-tank fuel filter | Replace | |
| Water in fuel filter | Replace the fuel filter or clean the fuel tank and fuel line | |
| Dirty or rusted fuel tank interior | Clean or replace | |
| Malfunctioning fuel pump (Clogged filter in the pump) | Replace | |
| Evaporative emission tl t | Mispiping of vapor line | Correct |
| conro sysem malfunctions (When | Correct | |
| tank cap is removed, pressure releasing | Folded, bent, cracked or clogged vapor line | Replace |
| noise is heard) | Faulty fuel tank cap | Replace |
| Malfunctioning overfill limiter (two-way valve) | Replace |




