Symptom:
    A Toyota bullet PREVIA car (2TZ-FE engine, the use of electronically controlled gasoline injection system), the engine in the low-speed operation is normal; throttle position stability in the adjustment operation, the engine appears shaking phenomenon; in the rapid acceleration or uphill When the acceleration is delayed.
    Troubleshooting:
    (1) the ECU fault self-diagnostic connector in the TE1 and E1 shorted, the ignition switch to the ON file, the instrument CHECK light shiny cycle equal, no fault code output. It is intended to disconnect the air flow meter, the throttle position sensor and the water temperature sensor and other wire plugs, make fault, and then retrieve the fault code, "CHECK" lamp display can be consistent with the fault code, the initial determination of this fault is set fault Code range.
    (2) the pressure gauge with a range of 0.6 MPa is connected to the gasoline pipe joint of the cold start nozzle; shorting the + B and FP connector of the ECU self-diagnostic joint port; the ignition switch to the ON position, the pressure gauge shows 0.3 MPa, The engine does not run, static observation, the pressure is normal. When the engine is started and the acceleration is accelerated, the pressure gauge pointer swings constantly between 0.15-0.30 MPa, indicating that the gasoline pressure fluctuates greatly. When the throttle is above the medium speed, the pointer is only about 0.15 MPa, which is obviously lower than the calibration The oil supply pressure indicates that the engine oil supply system is faulty.
    (3) put on a different type of hydraulic regulator, failure still.
    (4) put on a new petrol filter, this fault has a slight improvement.
    (5) Remove the fuel tank to check the pump oil pump capacity, it was found that the electric fuel pump into the oil filter is blocked by more dirt, remove the equipment after the test, failure to eliminate.