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
With today's electronic lift pumps from FASS and Airdog, TYPICALLY they do not come with a way to easily adjust fuel pressure. There are options out there but they are quite spendy and there's easier ways to accomplish the same thing. So for those who have pumps that do not have an external/adjustable regulator, your pump more than likely uses a spring and ball to regulate fuel pressure. Springs should be provided from the pump manufacturer to provide adequate pressures. Typically between 16-18psi. The pumps use a hard plastic ball, either a Buna or Viton ball. This will create a s