Diesel Fuel Pressure Sensor Testing

Testing the fuel pressure.

Diesel fuel pressure sensor testing.

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. 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. A car with a port injected pump should yield a reading between 30 and 80 psi. Ensure the engine is stopped.

It should be about 0 5 volts. If the fuel rail pressure sensor does not output the correct voltage verify the 5 volt reference is present at the sensor. Start the scope to see live data. If this sensor isn t working correctly the computer gets false information and turns on the check engine light.

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. Although the pressure sensor is often the cause of a p0452 or p0453 there are other possible causes. Minimize the help page. To check the ground wire check for voltage by back probing the connector with it connected.

Check the fuel rail pressure sensor voltage at key on engine off. Turn the ignition key and then the engine and record the pressure readings both times. Connect picoscope channel a to the signal circuit.