CP4 to CP-ISB21S3 (revised CP3) change for 2021 6.7L Diesel Trucks -- Merged Threads

[Brutal_HO]

Guys, please stay on topic.

"PLEASE stick to the technical, TSB, and/or recall aspects of this issue. "

 

[leeroy300]

If you think Canadians are better protected with our lemon law equavlant program..... check out a cpl things like the limited Km’s or Months you have to stake a case also remember its a 3 strikes to fix the same issue. l went through the process to get a Honda accord replaced its not fun or easy!

 

[sissy32179]

Hello everyone,
If you are currently experiencing concerns with your vehicle's CP4 pump, then we would be more than willing to escalate your situation to a specialist for support. This will connect you and your dealer to an individual who will offer an additional layer of assistance throughout the official diagnosis and repair of your vehicle. We would also be happy to review any of your questions or concerns through private messages. Thank you,

Kathryn
RamCares

we are having the that issue right now and the dealer is telling us it will be 3 Months to fix because parts are NOT available. and the is how we make a living. TRUCK HAS LESS THAN 20,00 MILE. WE NEED HELP!!!!!

 

[TigerRP]

Vet here too. Appreciate you all! I don't think you need to worry about your CP4.2. If I don't trade it before 100,000 miles and I love this truck, which I think I will. I will change it to a CP3 then.

 

[TigerRP]

How comical, I guess every forum has "the premadona"...
I never said entitled anywhere, the pre Madonna did.
what I should have said was " what a pain it would be to unload my wheelchair and catch a ride should the CP4 fail on me."
yes hoping the warranty would cover it.
when I bought this truck the Sales GM was a Vietnam Vet and we hit it off well- he bent over backwards to give me a great deal, best RAM Cummins deal I've ever gotten.
the disappointment comes now knowing RAM used a notoriously known bad component that will fail on a "commercial truck" like the chassis cabs or even an HO engine.
thanks guys!

Also remember you can blame on FCA but it is Cummins! I'm a big fan of Cummins and I put there equipment in generators in a lot of places and applications. I'm gonna run Diesel Kleen and when I get my aux tank on I'm gonna keep the main tank full all the time.

 

[TigerRP]

I never thought about aeration, I was always told the fuel keeps the tank pump form over heating, so don't let it go below 1/8 of a tank. I normally fill when it gets down to a quarter tank.

Someone said the idea is as the tank gets lower the sloshing around creates aeration which can cause the issue. My solution is to get my aux tank installed and keep the main tank full and run diesel keen.

 

[Brutal_HO]

That’s is very true. STAR is working to get a star online tsb out before end of year so Cummins can write it off as bad credit and start the new year fresh.


Sent from my iPhone using Tapatalk

It's now Feb and we haven't heard any more about this.

I don't expect to hear anything yet from FCA or RamCares, but what are your sources saying?

 

[mostcorey95]

It's now Feb and we haven't heard any more about this.

I don't expect to hear anything yet from FCA or RamCares, but what are your sources saying?

All that I keep hearing is that something is in the process and that’s all I can disclose. Look at what other manufacturers went through when this happen they still don’t admit to the faulty pump or bad fuel. I’m going to keep listening and when something comes out I’ll post it. I am currently swapping my 20’s cp4 out to a s&s ss pump. Since I’m going to build it up a little and it will flow fuel past what the stock and no tune required one will.

 

[exiledinaz]

My thoughts exactly. I may go for a while and be careful, but if we do not get a recall I will likely do the S&S Cp3 also. ANd will be sure to spread my thoughts on what FCA does in the end. Praises or condemnation of the brand depending on how they handle it. At 64 years old I planned for this to be my last truck purchase.

At 60 i figured the same as this was to be my last HD RAM diesel. If they screw up the "fix" on this, I may step up my plans to get rid of the truck and 5th wheel sooner then planned.

 

[UglyViking]

All that I keep hearing is that something is in the process and that’s all I can disclose. Look at what other manufacturers went through when this happen they still don’t admit to the faulty pump or bad fuel. I’m going to keep listening and when something comes out I’ll post it. I am currently swapping my 20’s cp4 out to a s&s ss pump. Since I’m going to build it up a little and it will flow fuel past what the stock and no tune required one will.

I'm in a similar situation to you in that I know the stock replacement isn't going to suit the needs of the mods I've got planned, but I also don't know that I want to dump everything at once. I like the idea of a CP3 from FCA that I can run stock, then tuned, and then swap and use it for a core charge on a larger unit. Otherwise I've got to jump straight to the larger unit now which will require the tune and possibly some other mods while I'm at it.

 

[Xflight29]

At 60 i figured the same as this was to be my last HD RAM diesel. If they screw up the "fix" on this, I may step up my plans to get rid of the truck and 5th wheel sooner then planned.

You sound like 60 is old ? I turn 60 this coming summer. 1 more Ram after this one. I put way to many miles on them not to.

 

[mostcorey95]

I'm in a similar situation to you in that I know the stock replacement isn't going to suit the needs of the mods I've got planned, but I also don't know that I want to dump everything at once. I like the idea of a CP3 from FCA that I can run stock, then tuned, and then swap and use it for a core charge on a larger unit. Otherwise I've got to jump straight to the larger unit now which will require the tune and possibly some other mods while I'm at it.

The ss pump can go from stock to 800+ according to s&s. I already did 30%overs now waiting on a new vgt drop in and a s488 over stock compound kit. The s&s ones don’t have a core.

 

[UglyViking]

The ss pump can go from stock to 800+ according to s&s. I already did 30%overs now waiting on a new vgt drop in and a s488 over stock compound kit. The s&s ones don’t have a core.

Good to know, might not be as bad as I expect then. I've heard that you can't do larger injectors on an emissions truck, I assume that since you're still running a VGT you're emissions on or you just like the quicker response? Feel free to PM if you don't want to publicly discuss.

 

[kobra]

You sound like 60 is old ? I turn 60 this coming summer. 1 more Ram after this one. I put way to many miles on them not to.

60 is the new 40.
Many more RAMS in your future!

B

 

[Millmutt]

60 is the new 40.
Many more RAMS in your future!

B

I’m 65 this isn’t my last truck

 

[ianacole]

60 is the new 40.
Many more RAMS in your future!

B

Is 50 the new 80? 'Cause it sure feels like that some days.

 

[Epsilon Plus]

Hello everyone, we would like to relay the latest update to you here regarding your concerns with the CP4 pump. There is currently a service solution in progress for all 2019- 2020MY vehicles equipped with CP4 high pressure pump. Further updates will be announced here as soon as more information becomes available. In the meantime, please know that our team remains available to assist in resolving serviceable vehicle concerns via private messages. Thank you,

Kathryn
RamCares

How's the 'ol "service solution" shaking out one month down the road?

If y'all need any suggestions, open the hood of a 2021. There's a top notch service solution in there. You're welcome.

 

[sissy32179]

Good to hear that you guys are working on something. Thank you!

not seen enough .. every week its down we are without a pay check and we are in week 3

 

[Nfryan]

A lot of posts to info to weed through regarding CP4 failures across a few forums. I have a 2019 2500 Mega Cab 6.7. with about 6k miles on it. Any warning signs I can be on the look out for prior to CP4 failure or just business as usual and then you are calling for a tow?

 

[sissy32179]

A lot of posts to info to weed through regarding CP4 failures across a few forums. I have a 2019 2500 Mega Cab 6.7. with about 6k miles on it. Any warning signs I can be on the look out for prior to CP4 failure or just business as usual and then you are calling for a tow?

No ours just quit running on interstate 65 had a little hiccup and than died