Diesel Fuel Pressure Sensor Testing

To check the ground wire check for voltage by back probing the connector with it connected.

Diesel fuel pressure sensor testing.

Ensure the engine is stopped. The fuel tank pressure sensor has the final say in telling the computer if the tank pressure is holding during a key on pressure test. You will see that picoscope has displayed an example waveform and is preset to capture your waveform. If this sensor isn t working correctly the computer gets false information and turns on the check engine light.

If the fuel rail pressure sensor does not output the correct voltage verify the 5 volt reference is present at the sensor. Check the fuel rail pressure sensor voltage at key on engine off. Glowshift fuel pressure bleeder screw sensor thread adapter for chevy gm 6 6l duramax diesel installs to fuel filter housing includes o ring 4 7 out of 5 stars 6 7 99 7. Turn the ignition key and then the engine and record the pressure readings both times.

Glowshift tinted 7 color 30 psi fuel pressure gauge kit includes electronic sensor black dial smoked lens for diesel trucks 2 1 16 52mm 4 2 out of 5 stars 49 84 99 84. A car with a port injected pump should yield a reading between 30 and 80 psi. Minimize the help page. Using manufacturer s data identify the output signal circuit for the fuel rail pressure sensor.

It should be about 0 5 volts. Testing the fuel pressure. Install the pressure tester to the test port when the engine is cold.