How hard is it to replace a VP44 injection pump?
Takes approximately 45 minutes for me to remove the VP44 Injection pump. Using a 10mm socket remove the four air horn bolts and one dipstick bolt. Using a 13mm socket loosen the 3 bolts holding the APPS sensor and unplug and move over toward the driver side fender. Now unplug the VP44 main connector and wire tap .
How do I know if my VP44 is bad?
To do this, connect a fuel pressure test gauge to the Schraeder valve located at the fuel inlet on the VP44, then turn the ignition key to the START position but just bump the starter (do not start the engine) and leave then it in the RUN position. This will cause the lift pump to activate for about 25 seconds.
How do you prime a VP44 injection pump?
The fuel transfer (lift) pump is self-priming: When the key is first turned on (without cranking engine), the pump operates for approximately 2 seconds and then shuts off. The pump will also operate for up to 25 seconds after the starter is quickly engaged, and then disengaged without allowing the engine to start.
Why do VP44 pumps fail?
The most common mechanical failure of the VP44 pump is rupturing of the diaphragm in the front of the injection pump. The diaphragm ruptures allowing the timing piston to vibrate and damage the front cover until fuel bypasses. The rupturing of the diaphragm is caused by a poorly designed lift pump.
How much does it cost to replace a VP44 injection pump?
VP44 acting up, throwing codes. Got a price of $600 labor and $1546 for a reman pump from Dodge dealer.
How long does it take to change a VP44?
How to remove the VP44 the quick and easy way. Takes approximately 45 minutes for me to do this much. Using a 10mm socket remove the air horn bolts and dipstick bolt.
How does a VP44 injection pump work?
The VP44 fuel pump is an electronically controlled rotary fuel injection pump; the pump controls the injection quantity & timing of the fuel injection. Engines that use these pumps also use mechanical injectors which control injection pressure (400bar approx. nominal pressure).
Can a VP44 be out of time?
The gear can not fall out of place, the key for the pump though, they can fall out and into the timing case. That is probly what happened if they had your truck for a week.
How does the VP44 fuel pump work on a Cummins Engine?
It first produces the high fuel pressure required for fuel injection. The pump also meters the exact amount of fuel for each injection cycle. As the diesel fuel moves through the VP44 it is distributing the high-pressure, metered fuel to each cylinder at the precise time. The fuel pump then varies the timing relative to your Cummins engine speed.
When do I need to replace my VP44 pump?
All remanufactured XDP VP44 Injection Pumps are warrantied to be free from defects in materials and workmanship for a period of twelve (12) months from the date of purchase. It is required that a new fuel filter be installed prior to installation.
Is the Dodge VP44 injection pump under warranty?
The Stealth Cover for the 1998.5 to 2002 Dodge 24V fits onto the VP44 injection pump, providing a secure, sealed connection instead of notching the pump wire for power mods. If the wires are cut in any way the pump is no longer under warranty, and any repairs that need to be made to the injection pump will be the buyer’s responsibility.
Can you run bio diesel through a VP44 pump?
Running bio diesel through your engine will also void the warranty of a pump. VP44 fuel injection pumps are a great pump and work very well only if you give it the right fuel. It is also highly recommend to not be using cheap filters or watered down fuel to improve the quality of life of your VP44.