When doing the CP4 HPFP recall do they mess with the Intake?

[Bob G]

Question is this: when RAM does the CP4 HPFP Recall (Y78) do they mess with the intake? Specifically the C.A.C. System? (like remove bolts)

Reason for asking the question:
Last Spring (2024) I had the Y78 Recall done and they replaced the CP4. Every thing seems OK for a couple of months and then I start having a very intermittent Check Engine Light (CEL) with a code of P0299 (Turbo Under Boost) CEL would come on with the code and then it would clear itself, and be gone for a couple of weeks, and then come back. I couldn't relate to it tripping the code to anything as it seemed totally random. The dealer did a re-flash with a new PCM update that was released that included the P0299 in its description. That didn't seem to make any difference as the Code still came and went. Finally the local dealer consulted with "Stelantis Engineering Team" and they pressure tested the the intake system and C.A.C. and found it was "leaking and the center bolt was missing" .

The Truck is almost 5 years old and I never had any problems/issues until they did the Y78 recall and then the CEL and code. Maybe they are unrelated but that bolt either wasn't put in at the factory and wasn't an issue until now. OR, it was loosened or taken out with the above results.

Curious minds want to know!

It has been almost 2 weeks and no CEL or code so far !

Later,

Bob

 

[Signal73]

Usually they just move the cold pipe out of the way by loosening the hump hose at the intake horn.


Process here:

https://static.nhtsa.gov/odi/rcl/2021/RCRIT-21V880-5163.pdf

 

[sag2]

See issue 126, pages 6-9 for the procedure. It does not mention removing it, but is there a bracket for a line in that area? That is the only thing I can imagine that they might have done as part of the procedure. But no telling if they did remove other parts for easier access.