Search the Community
Showing results for tags 'lift pump'.
Fuel Pressure Specification For Bosch VP44 Injection Pumps Here is a copy of the fuel system specifications from the Dodge Factory Service Manual. This is for your Dodge Cummins Turbo diesel truck with a Bosch VP44 injection pump. Fuel pressure Normal fuel pressure should float about 14-15 PSI running down the pavement. It should never fall below 10 PSI at all. Here is a colorize fuel pressure gauge to give you a clue of the fuel pressure span you want. You want the needle to stay in the green at all times. Yellow zone is a warning that you should check the fuel filter, lif
ASD Relay Controlled Lift Pump If the ECM is no longer powering the electric lift pump and you’re using a manual switch wired directly to the fuel pump relay for control there is a danger of the fuel pump feeding a fire in the event of an accident even if the engine stalls. The automatic shutdown relay is an alternative that will turn the fuel lift pump off if the engine stops and still be able to prime the VP44 if needed. The automatic shutdown relay (ASD) in the power distribution center (PDC) is energized by the powertrain control module (PCM) by grounding pin 85 of the r