RAM Cummins under investigation

[BOO-BOO-IS-IN-CAMP]

Cummins only Indorses one additive power service diesel kleen in the gray red and white jug's ...

i think this talk about fuel problem is all speculation ....

the pump on a cummins is only a lift pump in some of these model truck's the problem is not so much the lift pump but what the injector pump VP44 dose to the lift pump ...
to days cummins use rail & injectors system...older system's

my truck 2000 24 V and the 12 V uses a different system but simmeler pumps VP44
these pumps put pressure on the lift pump .. that is the problem on these model truck's .. VW use a different injector pump witch may be totally different and that lift pump can with stand the that injector pump...

this is only my speculation from what iv delt with on older system's i do know 6.5 cummins has had injector problems but i think it's mix issues with the computer & def additives ??? dont know but these guy's at #Newmont diesel, are high tech nothing gets past them..

2000 Dodge Ram 3500 dully 24V Cummins 5.9 long bed quad cab custom 4.10 auto billet trann & 3 dis torque air dog 150, 100 hp injector's the list go's on....
2014 Rock Wood UL 2608 WS Custom

[cbty]

Originally Posted by richardbrucewinquestjr

Webster’s defines Dodge as To avoid.

Thank goodness Ram became its own company. You can not buy a new Dodge Ram.

[Bhrava]

This is the CP4.2 pump. That electric fitting on the top between the heads is what controls the pressure, I draws fuel from the pumps crankcase. An isolation kit is fitted between it and the pump with it's own fuel supply. This prevents any debris that can come from a damaged crankcase from ever getting into the fuel system. If the heads go bad, different story, but 99.9% of all failures happens from the crankcase.

Doesn't matter who uses it, they all have the exact same issue.

[dlambers]

A bit more info: https://www.carcomplaints.com/news/2...tigation.shtml

[Jim34RL]

Originally Posted by BOO-BOO-IS-IN-CAMP

Cummins only Indorses one additive power service diesel kleen in the gray red and white jug's ...

i think this talk about fuel problem is all speculation ....

the pump on a cummins is only a lift pump in some of these model truck's the problem is not so much the lift pump but what the injector pump VP44 dose to the lift pump ...
to days cummins use rail & injectors system...older system's

my truck 2000 24 V and the 12 V uses a different system but simmeler pumps VP44
these pumps put pressure on the lift pump .. that is the problem on these model truck's .. VW use a different injector pump witch may be totally different and that lift pump can with stand the that injector pump...

this is only my speculation from what iv delt with on older system's i do know 6.5 cummins has had injector problems but i think it's mix issues with the computer & def additives ??? dont know but these guy's at #Newmont diesel, are high tech nothing gets past them..

2000 Dodge Ram 3500 dully 24V Cummins 5.9 long bed quad cab custom 4.10 auto billet trann & 3 dis torque air dog 150, 100 hp injector's the list go's on....
2014 Rock Wood UL 2608 WS Custom

The P7100 fuel pump was introduce with the first Cummins engines that were used in Dodge trucks. The VP44 was used from 1998.5 until 2002 for Dodge trucks with the Cummins engine. In 2003.5 the 5.9L Cummins engines started to use the CP3 fuel pump until 2007. Most 6.7L Cummins engines used the CP3 fuel pump also from 2007.5 and up. It wasn't until 2019 and 2020 that the CP4 was used. All of these pump models supplies the pressurized fuel to the injectors.

Dodge/Ram also have a fuel pump in the fuel tank either mechanical (89-98.5) or they are an electrical in tank fuel pump from 98.5 and up that supplies low pressure fuel to theVP44 or CP3/4 fuel pump. The mechanical in tank fuel pump was used with the P7100 fuel pump and VP44 fuel pumps only.

The Bosch CP4 fuel pump are all of very similar design with the only difference being one or two high pressure elements being used that will provide up to 2,700 Bar. Thus the designation of CP4.1 (one element) or CP4.2 (two elements) being used to differentiate them.

[Lins]

Originally Posted by BOO-BOO-IS-IN-CAMP

Cummins only Indorses one additive power service diesel kleen in the gray red and white jug's ...

Yes, but Ram only endorses their own additive and it's their warranty, not Cummins'.

Originally Posted by cbty

Thank goodness Ram became its own company. You can not buy a new Dodge Ram.

Thanks! I was going to make comment on that as well.

[tx333]

Not a diesel owner but my son is. He is adding the bypass kit to his Ford. https://www.accuratediesel.com/6-7l-...ntion-kit.html
May be a similar kit is available for GM & Ram. ?? ��
Motor Trend simple description article about CP4 pump failure. Although they focused on GM, CP4 failure is same.
https://www.motortrend.com/how-to/what-is-cp4-failure/
As an old ag and industrial equipment mechanic it’s hard to accept the CP4 failure. Tractor and equipment diesels were very tolerant of fuel used in them back in the day. Sure there were occasional injection pump failures but only a few. Now we have technology improvements making it better?
Best of luck to you guys getting your trucks fixed.

[TowPro]

Originally Posted by Jim34RL

Dodge/Ram also have a fuel pump in the fuel tank either mechanical (89-98.5) or they are an electrical in tank fuel pump from 98.5 and up that supplies low pressure fuel to theVP44 or CP3/4 fuel pump. The mechanical in tank fuel pump was used with the P7100 fuel pump and VP44 fuel pumps only.
.

in 98.5 they were mounted on side of block, than i think it was 2003 ior 4 when they went with the in tank lift pump.
Dealers were doing a retro install on older trucks to switch them to the tank.

I had to put 2 on my 1998 and one on my 2002. always just before leaving on vacation it seemed.


but in defense of OP, this is about the CP4

[flyflingingfool]

Local news here in Detroit announced today that a recall is coming for "fuel pump issues" and owners will be notified by mail in January.

https://www.caranddriver.com/news/a3...call-stalling/

[Lins]

Indeed

https://static.nhtsa.gov/odi/rcl/202...1V880-8784.PDF

[RobRockz]

I just received my email in regards to the fuel pump recall alert. I love it when Mopar states there is no fix due to lack of parts. Can’t say that I am not surprised. [emoji35]

[cbty]

Originally Posted by RobRockz

I just received my email in regards to the fuel pump recall alert. I love it when Mopar states there is no fix due to lack of parts. Can’t say that I am not surprised. [emoji35]Attachment 266104

You realize every recall is announced before there is an approved repair. I see 10-15 recalls every week without a repair. Calm yourself, it will be ok.

[rpmcnulty]

RAM is still trying to figure out why some of the 3500’s just catch fire.

All I was told is to “keep it outside” until they find the issue and fix.

[dward51]

Originally Posted by RobRockz

I just received my email in regards to the fuel pump recall alert. I love it when Mopar states there is no fix due to lack of parts. Can’t say that I am not surprised. [emoji35]Attachment 266104

Same way for my PPV Dodge Charger with the Takata airbag recall. Took nearly 2 years for mine to be replaced as they parts were never available.

[flyflingingfool]

Been waiting a year for the parts availability for the l wheel stud recall. All the trucks not being built due to chip and worker shortages and wheel studs still can’t be coughed up? [emoji2957]

[RobRockz]

Originally Posted by rpmcnulty

RAM is still trying to figure out why some of the 3500’s just catch fire.



All I was told is to “keep it outside” until they find the issue and fix.

Well that sounds reassuring [emoji23]

[cbty]

Originally Posted by flyflingingfool

Been waiting a year for the parts availability for the l wheel stud recall. All the trucks not being built due to chip and worker shortages and wheel studs still can’t be coughed up? [emoji2957]

The wheel studs won't be replaced. They will be inspected 1st, they have the measuring tools at the dealers. I would expect a official notice soon.

[flyflingingfool]

Originally Posted by cbty

The wheel studs won't be replaced. They will be inspected 1st, they have the measuring tools at the dealers. I would expect a official notice soon.

Even more reason to wonder why. lol

[cbty]

Originally Posted by flyflingingfool

Been waiting a year for the parts availability for the l wheel stud recall. All the trucks not being built due to chip and worker shortages and wheel studs still can’t be coughed up? [emoji2957]

The y26 wheel stud recall is a go from what I can see. All vehicles will be inspected, if studs are needed plan on leaving the truck. The parts have to be ordered and ok'd by engineering/star agents. It's going to be a process.

[cbty]

Originally Posted by flyflingingfool

Even more reason to wonder why. lol

It's not really a reason to wonder at all, recall parts aren't the same as over the counter repair parts. If you wanted all your wheel studs replaced you could of had that done without any issue. Recall parts are all get new part numbers and new packaging. It's not as simple as some would think. I know it's not that hard but, you will be OK. Call your dealer and make an appointment.