CP4 Question
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5th Wheeling
Joined: Oct 2021
Posts: 49
Likes: 21
CP4 Question
Any body have a fuel pump grenade on you? Seems to be lots of talk on the Ram forums, and now they are recalling over 220,000 trucks to replace Cp4's. I'm thinking about a disaster prevention kit but don't know if it's worth the trouble if Ford don't have the problems. Thoughts???
Freshman User
Joined: Jun 2007
Posts: 34
Likes: 12
Any body have a fuel pump grenade on you? Seems to be lots of talk on the Ram forums, and now they are recalling over 220,000 trucks to replace Cp4's. I'm thinking about a disaster prevention kit but don't know if it's worth the trouble if Ford don't have the problems. Thoughts???
Senior User
Joined: Dec 2004
Posts: 148
Likes: 35
2019 & 2020 Ram 6.7 Cummins used the CP4. 2018 and prior used CP3. 2021 and up went back to CP3. The Ram recall of the CP4s tells you all you need to know. Ford has been sued for their CP4 usage. I haven’t followed the outcome of the case. Kudos for Ram going back to CP3 in 21’.
Lead Driver
Joined: Sep 2006
Posts: 5,665
Likes: 164
From: Cartersville, Ga
Just swapped my first one out yesterday. My experience with 6.7s is that I’ve owned 3 and put around 150k miles on those trucks and maintain 4 for my brother’s company with close to 1 million miles between the 4 trucks. This 2017 with 200k miles has had a P0087 code for the last 2 months. The low pressure pump was right at the threshold of needing replaced, so due to the miles and the length of time that the truck was ran with the 87 code, we replaced the CP4.2 also. Zero shavings in it.
Yes, they fail. But I don’t think it’s this huge issue everyone makes it out to be. As cheap as they are from Ford, I don’t see it being a terrible idea to swap them after 200-300k miles.
Cross-Country
Joined: Dec 2020
Posts: 77
Likes: 4
My truck 2016 F250 stalled in an intersection. I had it towed to Ford. I figure it was emissions. Nope, got a call, water in fuel system. Total replacement of the system. 10K no warranty. The fuel pump is lubed by fuel, so water destroys the pump. The worst part is the parts are on national back order. They found 9 sets of parts in the US. But, the dealers would not sell it to them. They want to keep them, if they need them. I told them to pay a premium to the dealer. The parts came from ND and of coarse they send them ground. 4 days in transit. FYI they have to take the cab off to do the work. I was stuck in NC for 2 weeks. My truck had 35,000 miles on it and i did not get a water in fuel light. I would get it. FYI i traded the truck and now drive a 7.3 gas truck.
i would get extra fuel filter. I cant remember who make the kit.
i would get extra fuel filter. I cant remember who make the kit.
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Lead Driver
Joined: Dec 2020
Posts: 8,640
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They don't have to takethe cab off. It can be done either way, some techs do, some don't. Either way there is a lot of time involved and I sure don't want to have my '19 go through all that.
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Lead Driver
Joined: Dec 2020
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Aren't they both Bosch CP4 pumps, what's different about them?
I was reading through another thread here on the subject of RAM and their recall, one post listed the current pump as being different than the previous CP3 and the CP4. I asked for more info but got nothing. Are you familiar with what is different compared to the CP3 that was previously used?....also, I have read that they do not actually have a remedy for this recall yet.
I haven't looked too far into the recall but thought I read of a lawsuit. It would seem that if they have a successful lawsuit, a win, that it could be used to force Ford's hand.
2019 & 2020 Ram 6.7 Cummins used the CP4. 2018 and prior used CP3. 2021 and up went back to CP3. The Ram recall of the CP4s tells you all you need to know. Ford has been sued for their CP4 usage. I haven’t followed the outcome of the case. Kudos for Ram going back to CP3 in 21’.
I haven't looked too far into the recall but thought I read of a lawsuit. It would seem that if they have a successful lawsuit, a win, that it could be used to force Ford's hand.
Lead Driver
Joined: Sep 2006
Posts: 5,665
Likes: 164
From: Cartersville, Ga
Took me right under 6 hours to swap the HPFP and LPFP. I think I could be around 3 hours on a HPFP with more experience. Not a terrible job, just a little tedious.
Cargo Master
Joined: Mar 2005
Posts: 2,368
Likes: 620
Aren't they both Bosch CP4 pumps, what's different about them?
I was reading through another thread here on the subject of RAM and their recall, one post listed the current pump as being different than the previous CP3 and the CP4. I asked for more info but got nothing. Are you familiar with what is different compared to the CP3 that was previously used?....also, I have read that they do not actually have a remedy for this recall yet.
I haven't looked too far into the recall but thought I read of a lawsuit. It would seem that if they have a successful lawsuit, a win, that it could be used to force Ford's hand.
I was reading through another thread here on the subject of RAM and their recall, one post listed the current pump as being different than the previous CP3 and the CP4. I asked for more info but got nothing. Are you familiar with what is different compared to the CP3 that was previously used?....also, I have read that they do not actually have a remedy for this recall yet.
I haven't looked too far into the recall but thought I read of a lawsuit. It would seem that if they have a successful lawsuit, a win, that it could be used to force Ford's hand.
Lead Driver
Joined: Dec 2020
Posts: 8,640
Likes: 2,435
Seriously, electric? That doesn't seem right, I would think the CP4 pump in both applications would be gear driven. I was more curious about what internally differs between the two since they are both Bosch CP4.2 pumps.
Cross-Country
Joined: Dec 2020
Posts: 77
Likes: 4
In my case they changed the whole fuel system. I reviewed Fords flow chart. It gives step by step the procedure. It took 3 days to do the complete job. Draining tanks and inspecting them. There are some bolts at the very back that can be very difficult to remove. If a stud breaks your screwed. That is why the cab is removed.