KBob
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They Fail. As mentioned only difference is a little less cam ramp that makes them quieter. All other issues remain.
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CP4 to CP-ISB21S3 (revised CP3) change for 2021 6.7L Diesel Trucks -- Merged Threads
- Thread starter Viper67
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Let's hope so
Great White North Eh
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All I hear is crickets 
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Epsilon Plus
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UglyViking
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So I saw a post on a FB group that had linked photos taken from an apparent TSB dated June 9, 2021. The TSB had information about instructions and a "kit" that included all the needed parts to replace the CP4. The TSB was numbered 18-054-21. I've been unable to find anything via google or NHTSA, so I've got no way to know if this is real or not. I also have no way of knowing if this is the "service solution" that @RamCares had stated 6 months ago. The dates would seem to line up.
I gotta say I was pretty adamant that FCA was gonna do the right thing and issue a recall or TSB for these pumps, but with that TSB (if real), the timing and the fact that @RamCares still has not responded here I'm starting to think I may be eating crow any minute here. I really thought it was a no brainer for them to fix this, but it's starting to look like the only way it will be fixed is via a lawsuit. Shame.
I gotta say I was pretty adamant that FCA was gonna do the right thing and issue a recall or TSB for these pumps, but with that TSB (if real), the timing and the fact that @RamCares still has not responded here I'm starting to think I may be eating crow any minute here. I really thought it was a no brainer for them to fix this, but it's starting to look like the only way it will be fixed is via a lawsuit. Shame.
diablo82
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I think that's just a repair instruction for CP4 that's already bombed. Not a recall.
There was simply a "kit" part number put together for dealers to order all parts needed to replace a failed CP4 with another CP4.
UglyViking
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Right, I understand that kit is for the CP4, it's apparent in the fact that there are no bracket changes thus it needs to still be a CP4 (the CP3 mounts slightly differently).
My comment here is that the timing seems to align with FCAs intended "fast feedback" period (which ended the last day in May) and the fact that they still haven't commented back on these posts. I'm beginning to think that the "service solution" is literally just a CP4 replacement kit that includes all the necessary parts for when the thing glitter bombs. Their "solution" may be just to have kits ready to ship out to get these things back on the road.
I'm starting to become more pessimistic about the situation every passing day. I was pretty convinced for a long while (as evident in my many, many posts on this thread) that FCA would end up doing "the right thing" and they just needed to give it time, parts were probably scarce, etc. I mean after all we were in a pandemic and FCA couldn't even get trucks built for new customers, and CP4s were way backordered.
At this point let's look at the facts. @RamCares hasn't responded to any of the @s in this thread since months ago. It's been 6 months since the proposed "service solution" was teased but we still have no clear solution to the problem. The "fast feedback" program (source) ended the final day of May and the above Service Solution was posted early June.
Now, I'll be clear, I've got no clue what a fast feedback program is, but from my reading they both restricted ordering parts for replacement as well as collected data as part of this issue. I also could be way off, but @RamCares did state they were working on a "service solution", and the info I shared was indeed a "service solution". Additionally, if they planned a recall, TSB, etc. where they would recall the CP4 then why release a kit for the CP4 disaster right now? It seems odd that they would take the time to put together the kit, and I assume release the requirements for a star case for every blown pump, if they were planning on recalling them so quick?
I could be wrong, I hope I am. I've been one of the most vocal people on this thread about how FCA has to do some sort of recall because otherwise they were open to massive lawsuits, especially seeing what just happened with Ford recently with multiple cases. FCA is in the absolute worst spot of them all, and open to by far the most lawsuits considering how short the CP4 was on and that it had a revision. You don't need too many engineers to backup the claim when even FCA reverted to a CP3 style pump (new part number or not).
Again, hope I'm wrong, but starting to seriously doubt it.
My comment here is that the timing seems to align with FCAs intended "fast feedback" period (which ended the last day in May) and the fact that they still haven't commented back on these posts. I'm beginning to think that the "service solution" is literally just a CP4 replacement kit that includes all the necessary parts for when the thing glitter bombs. Their "solution" may be just to have kits ready to ship out to get these things back on the road.
I'm starting to become more pessimistic about the situation every passing day. I was pretty convinced for a long while (as evident in my many, many posts on this thread) that FCA would end up doing "the right thing" and they just needed to give it time, parts were probably scarce, etc. I mean after all we were in a pandemic and FCA couldn't even get trucks built for new customers, and CP4s were way backordered.
At this point let's look at the facts. @RamCares hasn't responded to any of the @s in this thread since months ago. It's been 6 months since the proposed "service solution" was teased but we still have no clear solution to the problem. The "fast feedback" program (source) ended the final day of May and the above Service Solution was posted early June.
Now, I'll be clear, I've got no clue what a fast feedback program is, but from my reading they both restricted ordering parts for replacement as well as collected data as part of this issue. I also could be way off, but @RamCares did state they were working on a "service solution", and the info I shared was indeed a "service solution". Additionally, if they planned a recall, TSB, etc. where they would recall the CP4 then why release a kit for the CP4 disaster right now? It seems odd that they would take the time to put together the kit, and I assume release the requirements for a star case for every blown pump, if they were planning on recalling them so quick?
I could be wrong, I hope I am. I've been one of the most vocal people on this thread about how FCA has to do some sort of recall because otherwise they were open to massive lawsuits, especially seeing what just happened with Ford recently with multiple cases. FCA is in the absolute worst spot of them all, and open to by far the most lawsuits considering how short the CP4 was on and that it had a revision. You don't need too many engineers to backup the claim when even FCA reverted to a CP3 style pump (new part number or not).
Again, hope I'm wrong, but starting to seriously doubt it.
They're also not responding to PM's regarding this issue.
exiledinaz
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If I make it to Idaho and back to Phoenix later this month pulling the 17K 5th wheel(1/2 the rated load mine is supposed to handle) and they have no "service solution" as of then, I may be getting rid of the 2020 and or going S&S CP3 to solve it once and for all. I know, lose the warranty. (It won't be the first time FCA crapped down my throat on warranty) That means nothing if I'm on a 6% downgrade and the pile of aluminum CP4 crap gives out. All I can pray for is my 2021 5th wheel trailer brakes MIGHT stop me before I go over a cliff or I can steer it to a stop with the better half... Happy travels I suppose...LOL
I have to agree that @RamCares has been a big disappointment with their silence on this after dangling the carrot in front of us early on. This whole thing brings up memories of how Ford screwed me over 20+ years ago and I still won't even entertain anything they have to sell. It's sad but it appears they've put money before loyalty. Imagine if for starters everyone of us switched brands and got at least one other person we know to do the same. I'm guessing it could snowball to where there would be a lot of unsold Ram's on the lots. Oh they'd still have the wanna be truck owners that have never even put anything in the bed, but the heavy-duty market could go to the competition. I'm old enough to remember when owning a Dodge truck was laughable because they were a real piece of #$%@. August 1st I may start looking at GM.......and I'll never be back.
Unfortunately with the current shortage of HD trucks on lots, they have you by the shorthairs. I expect that will change in the next 18-24 months, but my magic 8-ball isn't giving my good intel at this time.
Epsilon Plus
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You're not wrong. It's time to stop saying "I hope" and realize it's over. I called this "service solution" crap pages ago when I saw the TSB. Count me in as someone who was severely brand loyal, jumped brands, got someone else to jump brands, and is now shopping this truck out to go back. The GM is ugly as sin but at least it has a Denso HP4 and they historically have never F'd me. Always solid on warranty stuff. Plus, after their ignition debacle, they are incredibly transparent compared to Stellantis. Go look up the NHTSA stuff on a Silverado vs a RAM. There's 110% more MFG communications and publications.
The LTZ Duramax I'm looking at is $61k. My book value is $62k. I think I'm over this crap. F you Stellantis.
I'm really disappointed that @RamCares hasn't had the balls to reply to anything . They might as well change their name to @Ramdosen't care ! If I don't see some sort of permeant fix by August 1st, I'm totally done with FCA. It's sad that some silly bean counter is calling the shots. In the big picture what would making it right really cost? They had the shot to take number 1 and they threw it away. Should have went with my gut and stayed away from Ram.
Either we are all jumping the gun and there is a fix in the works that has production delays like everything else on the planet right now. Or it is what it is. The lack of response to this thread after calling out a fix is an odd direction to take. I’m looking to purchase a second HD truck for my business soon. I’ll giving it another month and my business, like many others will go elsewhere. A 70-80k vehicle should not have this type of failure looming.
It's going to be a lot less. They are talking about a major amount of chips coming online starting in the third quarter of this year, and matching demand by spring. All those '21's are going to flood the market, while ramping up the '22's.
Please refrain from bashing RamCares with vulgar insults.