CP4 Fuel Pump EcoDiesel Recall

[Sting-Gray Neutral Pres.]

If it's a "parts shortage" it's a physical part that will be installed, not a software adjustment. Reading between the lines, if this is a complicated part (ie, a new fuel pump) the shortage is likely with individual component suppliers, thus delaying production/delivery of the "part".

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[ShadowsPapa]

If it's a "parts shortage" it's a physical part that will be installed, not a software adjustment. Reading between the lines, if this is a complicated part (ie, a new fuel pump) the shortage is likely with individual component suppliers, thus delaying production/delivery of the "part".

There are a lot of details about the pump, how it's built, how it works and likely why it's failing.
It's not like there's any lack of information at all - there are detailed breakdowns of the pump's parts and how they work and how they fail.
It's a physical part for sure - no software. Likely part of the issue is coming up with a new design and manufacturing it, as well as "getting parts to make it".
And then there are issues related to how the auto makers used it- without a lift pump and so on, causing further issue.
Add to that the fact that pump has been used by Ford, GM, and others - so once they are in production (likely already) there are tens of thousands of people waiting for them across multiple makes and models.

 

[rharr]

There are a lot of details about the pump, how it's built, how it works and likely why it's failing.
It's not like there's any lack of information at all - there are detailed breakdowns of the pump's parts and how they work and how they fail.
It's a physical part for sure - no software. Likely part of the issue is coming up with a new design and manufacturing it, as well as "getting parts to make it".
And then there are issues related to how the auto makers used it- without a lift pump and so on, causing further issue.
Add to that the fact that pump has been used by Ford, GM, and others - so once they are in production (likely already) there are tens of thousands of people waiting for them across multiple makes and models.

It can be both hardware and software. The GDE guy who makes a living off tunning these things alleges there is some lines of code in the software that actuate one of the pressure control solenoids on the pump to reduce the load on the motor (aka fuel economy) when high pressure is not need as much such as idle, but then through it's operation causes a momentary cavitation in the pressure chamber of the pump which could allow momentary metal on metal contact.

His solution for better longevity is to adjust this "feature" .

End of the day though, the hardware design is a bad design that doesn't have any redundancy or self preservation design built in. Plus it's Bosh and I have heard from some OEM diesel engineers who have been bitten by Bosh, Bosh is kinda known for poor QA/QC.

 

[Madtom]

Kind of curious if the mod will be like this one from RCD Performance where the pump design is modified so that the pistons/rollers are secured from changing orientation and the flow of fuel is rerouted so that it is no longer part of the failure chain once the roller/lifter is shredded into the whole fuel system.

This update makes it so that the fuel piston /roller can no longer rotate in the bore if there is a loss of fuel pressure due to air in the system etc. It is just not Jeep that has this problem but basically all CP4 engines using this bosch pump GM, Ford, Cummins etc.

looks like this is a drop in for Gen 2 and 3 Eco's.

 

[my dog Trigger]

took me a while to find this thread but i read some of yours when this all began a year ago my pump went out envison the dealer in covina did a very bad job 65 days in the shop left parts off of truck had to go back many times and then do it my self to get parts on properly now a year later the pump just went out like the first time. no new pump ready yet says jeep so waiting to here what they are going to do!

 

[Sandevino]

I’ve seen maybe a dozen or so fuel pumps fail on true HD diesel rigs over the years. Most of these failures were age related and occurred around 500k miles and roughly 12000 engine hours. Before HPFP’s, you’d rebuild or replace the pump, inspect the injectors and get another 500k miles out of the rig.

With the advent of the HPFP in the light and medium duty market most of the failures are due to improper maintenance and/or air in the fuel lines. With no lift pump the HPFP on the EcoD is screwed if enough air is introduced into the system. You can minimize or eliminate the potential for air in the line by not running the tank down to fumes and properly priming a new fuel filter.

Whether or not the CP 4.2 should have pins to prevent the cams from rotating is up for debate. Personally, I see a benefit to save the end-user from themselves, avoiding recall activity and downtime but this is from the maintenance perspective. Proper fueling and maintenance would make the issue far less likely but end-users will always blame the manufacturer over their misuse or neglect of the vehicle.

There‘s a growing idea that swapping the CP 4.2 with the CP 3 will fix the issue as RAM did it for the Cummins. Wrong….Cummins did it on the Cummins. Swapping the pump introduces cam lobe geometry, pressure, rotation, input to output ratios and a host of issues beyond a forum post. Can it be done? Yes, if you’ve got $20k plus to throw at it.

 

[Teqsand]

This recall is released, just the parts are restricted at the moment due to part shortage. Our team is currently working with suppliers and supply chain on getting this issue resolved. We will be sending a notification out to all affected customers on this once we do get some further feedback. We appreciate your patience and cooperation.

William
Jeep Cares

Enlighten the VERY CONCERNED community as to whe the fix will look like, pinned pump? Retrofit CP3? what? Will it extend the warranty?

 

[Teqsand]

took me a while to find this thread but i read some of yours when this all began a year ago my pump went out envison the dealer in covina did a very bad job 65 days in the shop left parts off of truck had to go back many times and then do it my self to get parts on properly now a year later the pump just went out like the first time. no new pump ready yet says jeep so waiting to here what they are going to do!

Mine was in 45 days to fix about a year ago.... I sold back to jeep and bought a 23 hoping it had an unabated pump, nope, so I'm riding the bomb once again hoping I don't lose it going into a guardrailless corner

 

[my dog Trigger]

up date dealer called engineers they said will not fix because its a safety issue until they come up with new pump so its siting at dealer broken

 

[my dog Trigger]

i say there is a different problem when the work was done the first time the dealer told me he never herd of it going out twice assured me i was good. i never go below a 1/4 tank always use fresh fuel change every thing on time very carful. Did the dealer do something when they put it back the last time? I have not heard of any one except me to be twice the replacement pump was April or May 2022 i would not think it was a bad one a year ago both pumps broke at about the same milage does not make sense. boy when it goes no warning every thing locks up. please keep giving feed back like information and how all of you are making out thanks dale

 

[Free2roam]

So it sounds like there is no fix. Also sounds like even after they attempt to fix it under what they say is a fix. It wouldn't be a bad idea to keep a RCD Performance fuel pump with you if you're traveling in a remote area where you have no other option but to fix it yourself.

 

[Rusty PW]

So it sounds like there is no fix. Also sounds like even after they attempt to fix it under what they say is a fix. It wouldn't be a bad idea to keep a RCD Performance fuel pump with you if you're traveling in a remote area where you have no other option but to fix it yourself.

Plus injectors with the fuel pump.

 

[Sandevino]

So it sounds like there is no fix. Also sounds like even after they attempt to fix it under what they say is a fix. It wouldn't be a bad idea to keep a RCD Performance fuel pump with you if you're traveling in a remote area where you have no other option but to fix it yourself.

Plus injectors with the fuel pump.

Plus the tools and knowledge to complete the job...

 

[Teqsand]

Plus the tools and knowledge to complete the job...

Plus fuel rails and a new fuel filter housing assy

 

[@californiajeeping]

Probably smarter to just swap the pump out with theirs now. I emailed them 2x and got 0 reply. SO..........

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