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

    Are you stating that Stellantis is saying the 2019's are not in-scope for the recall? Just drop your VIN in the search over at the NHTSA site, print it out and take it to the dealer.
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    AC Fix TSB (Pre 8/20 build trucks)

    Here's my story. 1st go at it HERE 2nd run at it HERE TLDR: They got it fixed eventually, after lots of parts and labor.
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    RamCares Cp4 service solution updates - (Y78) CP4 recall issued by FCA - 2020 Parts Available May 10

    Anyone get their pump replaced yet? My experience with the local dealer is 50-50, and I don't want to be one of the first few that they've repaired under this recall.
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    CP4 to CP-ISB21S3 (revised CP3) change for 2021 6.7L Diesel Trucks -- Merged Threads

    If it's -38°C outside, that God's way of telling you to stay inside.
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    CP4 to CP-ISB21S3 (revised CP3) change for 2021 6.7L Diesel Trucks -- Merged Threads

    Which if the case, he's probably starved the fuel pump, potentially burning up the delicate bits of the CP4.
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    CP4 recall thread (merged threads) - Y78 Jan 2022 recall campaign - Parts Available May 10 for 2020 trucks only

    Agree. Having to prove your innocence takes more effort then Ram acknowledging it.
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    Ram cp4 failure thread - Post all CP4 failures here DO NOT start a new thread.

    I'm pretty sure the higher pressure is needed primarily for emissions reasons (EGR and SCR filter). The higher pressure injection allows for a cleaner burn. Even if you could "trick" it to use a lower pressure pump, you'd still have downstream issues with a "dirtier" burn.
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    Ram cp4 failure thread - Post all CP4 failures here DO NOT start a new thread.

    You're going to need to get the whole fuel system replaced anyways, so call around and see if any other dealers nearby have the bandwidth to repair it. Get the replacement CP4 installed, and follow up with the recall replacement CP3.3 down the road. You should have a good 10K or so miles as a...
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    CP4 to CP-ISB21S3 (revised CP3) change for 2021 6.7L Diesel Trucks -- Merged Threads

    How is it no detailes of the recall (parts list or repair procedure) have been leaked yet? It's not like this is some Skunk Works project.
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    CP4 to CP-ISB21S3 (revised CP3) change for 2021 6.7L Diesel Trucks -- Merged Threads

    I could be wrong about the performance side (I thought I read that somewhere), but according to this video the CP4's may be cheaper to make and are need for emissions reasons. CP4 ---> CP3 Swap video
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    CP4 to CP-ISB21S3 (revised CP3) change for 2021 6.7L Diesel Trucks -- Merged Threads

    I've heard that the CP3 at the time didn't produce enough pressure (~24k PSI MY2013 - 2018), so the CP4 was used (30k PSI). You need higher pressure for power, and probably more importantly to meet ever tightening emission standards (cleaner burning, less EGR issues). I've also read that what...
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    CP4 recall thread (merged threads) - Y78 Jan 2022 recall campaign - Parts Available May 10 for 2020 trucks only

    Coming from the guy who openly announces he has a 6 Speed big dirty dually. ;)
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    CP4 recall thread (merged threads) - Y78 Jan 2022 recall campaign - Parts Available May 10 for 2020 trucks only

    Interesting how Carfax didn't waste any time notifying me about this recall. I wonder how much they pay my local dealer to track my service there? Originally, I never signed up with Carfax for any programs or services. Only after I took the truck in to get the A/C TSB performed, did Carfax start...
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    CP4 recall thread (merged threads) - Y78 Jan 2022 recall campaign - Parts Available May 10 for 2020 trucks only

    A lot of this is speculation, but there's already aftermarket CP4 ---> CP3 swap that doesn't require the timing cover to be replaced. It uses a collar adapter to mount up. Dude mentions this in the clip below. CP4 ---> CP3 Swap
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    CP4 recall thread (merged threads) - Y78 Jan 2022 recall campaign - Parts Available May 10 for 2020 trucks only

    No way in hell are they doing engine swaps on 260k (US) trucks. Even before the recall, on a glitter bombed claim,they were swapping fuel system components not replacing engines.
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    Factory Fixed Chrome Running Boards

    Yes that was the part # and the hardware kit I used was P/N: 68193128AB (it's a crush nut system that fits in the body).
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    CP4 recall thread (merged threads) - Y78 Jan 2022 recall campaign - Parts Available May 10 for 2020 trucks only

    When they do the AC TSB, heavily suggest they replace the heater core. Don't ask me how I know. Just read about my adventure (including pics) with the service dept while getting the AC TSB done, AND the heater core replaced AND interior carpet replaced. AC TSB Experience
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    AC Fix TSB (Pre 8/20 build trucks)

    Update on my TSB A/C Fix fiasco. It's been about 5 weeks since TSB was done, At the time, I drove the truck home and parked it for a few days. I noticed it was leaking coolant somewhere on the front passenger side (carpet was soaked), so I sent it back via rollback to the dealer. Didn't want to...
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    AC Fix TSB (Pre 8/20 build trucks)

    Looks like they made their own bypass/off MOD.
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    AC Fix TSB (Pre 8/20 build trucks)

    Service Adviser states there's an issue with the heater core (wasn't specific as to what), and it has to be replaced. Yesterday she said it was on B/O, then today she stated the heater core should be in next Tue ( 9/21). They are also ordering new carpet to replace the current antifreeze bathed...
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