Diesel Fuel Pressure Sensor Testing

Install the pressure tester to the test port when the engine is cold.

Diesel fuel pressure sensor testing.

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. Turn the ignition key and then the engine and record the pressure readings both times. Connect picoscope channel a to the signal circuit. Minimize the help page.

Start the scope to see live data. Check the fuel rail pressure sensor voltage at key on engine off. 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. 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.

To check the ground wire check for voltage by back probing the connector with it connected. If the fuel rail pressure sensor does not output the correct voltage verify the 5 volt reference is present at the sensor. Although the pressure sensor is often the cause of a p0452 or p0453 there are other possible causes. Ensure the engine is stopped.

A car with a port injected pump should yield a reading between 30 and 80 psi. Using manufacturer s data identify the output signal circuit for the fuel rail pressure sensor. Testing the fuel pressure.