Vp44 mystery - Dodge Cummins Diesel Forum
98.5-02 Powertrain Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine , Transmission Ect..NO ADVERTISING .

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post #1 of 8 (permalink) Old 08-23-2019, 07:33 PM Thread Starter
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Vp44 mystery

Just picked up this 01 sport cummins 4x4 in Denver for a steal. It has po216,341,382, already replaced the cam sensor, what a hassle. I’m getting perfect pressure from the LP. I cracked injectors1,3,4 and 4 is getting perfect fuel and the rest nothing. I’ve got a 994x4 24v with 340k miles and so far no problems with the vp. Is there a reason why I’m getting only fuel out of certain cylinders? Thankyou guys

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post #2 of 8 (permalink) Old 08-23-2019, 08:20 PM
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do a search there is a procedure to check the VP44 IIRC blue chip diesel. It will lead you in the right direction.

2002 2500 Quadcab LB 4X4 NV5600 HO stock
2012 3500 SRW Crewcab LWB 4X4 Auto 6.7 HO stock
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post #3 of 8 (permalink) Old 08-24-2019, 01:31 AM
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Bad VP44 as the 216 code tells you.

99 2500, Quad cab, 4x4 47RE, BD pressure lock on it, small BD 90/140 chip on the VP 44 connection plug, 17" 3rd gen wheels. 3.55 diffs. Ruenell front bumper and warn winch, Rancho adj shocks. 663k miles.
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post #4 of 8 (permalink) Old 08-24-2019, 11:16 AM
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The lift pump fuel pressure needs to be known,
Fuel pressure test kits are available at most chain type auto parts stores. The gasser kits work fine.




Screw the connector on the fitting of the injector pump on the driver's side of the engine.
Turn the keyswitch just enough to "bump" the starter to get The Free 25 Second Lift Pump Run.



Stock spec is 10psi+, most folks look for 15psi.

'01.5 QC, SB, 6spd 4x4, Drag Comp, 4" exh. Jammer 100's, 62-65-.70A/R WG, adj.boost elbow Big Line, fuel press.pyro & boost gauges fuel cooler BHAF, Black Holley lift pump-12psi WOT Ceramic/Kevlar SD clutch, studs Take time to turn-so you don't burn
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post #5 of 8 (permalink) Old 08-24-2019, 09:08 PM Thread Starter
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Quote:
Originally Posted by Clunk View Post
The lift pump fuel pressure needs to be known,
Fuel pressure test kits are available at most chain type auto parts stores. The gasser kits work fine.




Screw the connector on the fitting of the injector pump on the driver's side of the engine.
Turn the keyswitch just enough to "bump" the starter to get The Free 25 Second Lift Pump Run.



Stock spec is 10psi+, most folks look for 15psi.
Clunk I havnt got around to putting on a pressure gauge but I did pull off the injector lines mentioned and it seems I’m only getting fuel out of number 4 when priming the pump, is it suppose to prime all cylinders? And with that being said could the pump gear be damaged causing the rotor not to cycle to each cylinder? I’m trying everything before I drop a grand on my girlfriends truck.
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post #6 of 8 (permalink) Old 08-24-2019, 10:42 PM
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There is nothing wrong with the timing drive gear. It is internal timing failure as stated in code.

99 2500, Quad cab, 4x4 47RE, BD pressure lock on it, small BD 90/140 chip on the VP 44 connection plug, 17" 3rd gen wheels. 3.55 diffs. Ruenell front bumper and warn winch, Rancho adj shocks. 663k miles.

Last edited by bigfish95971; 08-25-2019 at 01:15 AM.
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post #7 of 8 (permalink) Old 08-25-2019, 01:15 AM
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If you do not have a gauge just loosen an inflow line on VP or either line on the fuel filter and bump the starter. If you get fuel squirting all over, it is getting plenty of fuel for the time being and to start fine. Check pressure later. You can even check fuel pressure with a 5 dollar air pressure gauge ro 20 dollar vacuum/pressure gauge.
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99 2500, Quad cab, 4x4 47RE, BD pressure lock on it, small BD 90/140 chip on the VP 44 connection plug, 17" 3rd gen wheels. 3.55 diffs. Ruenell front bumper and warn winch, Rancho adj shocks. 663k miles.
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post #8 of 8 (permalink) Old 08-25-2019, 09:29 PM
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Looks like you need to shed the air in the injectors & lines.

To prime the system,
Charge the batteries, you're gonna be calling on them.

Be sure the fuel filter canister is full of fuel.

Disconnect the battery charger...very important.
Turn the keyswitch just enough to "bump" the starter to get The Free 25 Second Lift Pump Run.

Your lift pump pressure gauge should show 10 psi or greater.

Loosen the fittings on #1, #3 & #4 injectors with a 3/4"or 19mm open end wrench.

Crank the engine for 10 seconds then check and tighten any wet, dripping fuel injector fittings.
Repeat the 10 second cranks & tighten the wet injector fittings until the engine kicks, trying to
start then tighten the remaining loose fittings and start the engine.

'01.5 QC, SB, 6spd 4x4, Drag Comp, 4" exh. Jammer 100's, 62-65-.70A/R WG, adj.boost elbow Big Line, fuel press.pyro & boost gauges fuel cooler BHAF, Black Holley lift pump-12psi WOT Ceramic/Kevlar SD clutch, studs Take time to turn-so you don't burn
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