Diesel Fuel Pressure Sensor Testing

Turn the ignition key and then the engine and record the pressure readings both times.

Diesel fuel pressure sensor testing.

If the fuel rail pressure sensor does not output the correct voltage verify the 5 volt reference is present at the sensor. Testing the fuel pressure. Minimize the help page. 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.

Start the scope to see live data. You will see that picoscope has displayed an example waveform and is preset to capture your waveform. 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. 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. Although the pressure sensor is often the cause of a p0452 or p0453 there are other possible causes. 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.

If this sensor isn t working correctly the computer gets false information and turns on the check engine light. It should be about 0 5 volts. Check the fuel rail pressure sensor voltage at key on engine off.