1991-Montero-Service-Manual · trouble shooting · страница 26 из 63 · Открыть оригинал PDF ↗
| Low fuel pressure Test pressure regul- ator and fuel pump, check for restricted lines and filters |
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| No distributor reference Repair ignition pulses system as necessary |
| Open coolant temperature Test sensor and sensor circuit wiring |
| Shorted W.O.T. switch in Disconnect W.O.T. T.P.S. switch, engine should start |
| Defective ECM Replace ECM |
| Fuel tank residual pressure Test for fuel valve leaks pressure drop after shut down |
| Hard Starting Disconnected hot air tube Reconnect tube and to air cleaner test control valve |
| Defective Idle Air Control Test valve operation (IAC) valve and circuit |
| Shorted, open or misadjusted Test and adjust or T.P.S. replace T.P.S. |
| EGR valve open Test EGR valve and control circuit |
| Poor Oxygen sensor signal Test for shorted or circuit |
| Incorrect mixture from PCV Test PCV for flow, system check sealing of oil filter cap |
| Poor High Speed Low fuel pump volume Faulty pump or Operation restricted fuel lines or filters |
| Poor MAP sensor signal Test MAP sensor, vacuum hose and wiring |
| Poor Oxygen sensor signal Test for shorted or open sensor or circuit |
| Open coolant temperature Test sensor and sensor circuit wiring |
| Faulty ignition operation Check wires for cracks or poor con- nections, test secondary voltage with oscilloscope |
| Contaminated fuel Test fuel for water |
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