What's new
By:
Ram Heavy Duty Forum

Register a free account today to become a member! Once signed in, you'll be able to participate on this site by adding your own topics and posts, as well as connect with other members through your own private inbox!

Ram cp4 failure thread - Post all CP4 failures here DO NOT start a new thread.

Brutal_HO said:
They have to flash it. You can reflash your tune in the parking lot after they're done. Many have done so.
Click to expand...
They do not have to flash it as the only change is fuel calibration and the tune overwrites it anyway so some dealers have been just skipping the flash and saying they did it for the recall paperwork side of things. I have spoken to a few guys who had the dealer skip the flash no issues and its also what my tuner recommended to save the hassle of trying to hook up a battery charger to flash the ecm upon picking up the truck.
 
H3LZSN1P3R said:
They do not have to flash it as the only change is fuel calibration and the tune overwrites it anyway so some dealers have been just skipping the flash and saying they did it for the recall paperwork side of things. I have spoken to a few guys who had the dealer skip the flash no issues and its also what my tuner recommended to save the hassle of trying to hook up a battery charger to flash the ecm upon picking up the truck.
Click to expand...

Maybe in Canada.

I'd be curious to know if any US dealers have agreed to not push a flash update.
 
Ram??? said:
Thanks for all the input, guys.

They did not re-flash and all is good. It is marked on the paperwork as "ECU re-flashed" , probably just to satisfy the recall bulletin.

Overall a good experience with the dealership.
Click to expand...
Yup they put that so they can get paid lol
 
that's exactly what the dealer did on my vb recall, among the others required. tech didn't flash it, he knows my situation, and said he can check the complete box and be just fine. haven't had any issues.
 
I'm glad the dealers do recalls on deleted trucks. Seems odd though, when they repair them, they basically indemnify the delete.
 
My 2020 Cummins Sport 3500 Dually truck is finally finished.

Quick synopsis:

  1. The fuel Pump Failed on August 27th (had been on the waiting list for the CP4 repair)
  2. The correct flatbed came to pick up the truck on August 31st (a local problem because the towing companies weren't sending the right trucks)
  3. The dealer diagnosed the fuel system repair in early September (Castle Jeep Chrysler in Naperville - closest to where my truck was located)
  4. The dealer received 2 of 3 parts in the week of Sept 30th (the fuel tank was on backorder for 3 weeks)
  5. 3rd part (fuel tank and lines) showed up the week of October 3rd
  6. The truck was repaired and delivered back to me (with 1/3 tank of fuel) on October 12th at 5 pm
Repairs didn't cost me anything but time, and a half tank of fuel (I had filled the tank 10 minutes before it failed)

So far so good. I drove the truck for 60 minutes yesterday. Noticed nothing different - same old truck.

I wanted to thank the dealer for dealing with the issues best they could. They kept me in the loop and were completely transparent with the process, parts needed and timing best they could.

I'm still a Mopar die-hard to the end. Take the good with the bad...
 
Hopefully FCA fired the engineer that OK'ed going with a known failure. FCA is at least recalling them unlike the other two manufactures.
 
Hey there, new to this site but im running a 2020 ram 2500 deleted and tuned with a 45 over tune. Been back and forth with my dealership about getting the CP4 (Y78) recall done. So far they only did one truck thats been deleted and theyre still having tuning issues with it. Figured is post here to see if anyone else had the recall done with a delete and are having no issues and what tuner/tuning company you guys are using. Thanks. Located in Canada.
 
Last edited:
Alexcollins said:
Hey there, new to this site but im running a 2020 ram 2500 deleted and tuned with a 45 over tune from tuning, been back and forth with my dealership about getting the CP4 (Y78) recall done. So far they only did one truck thats been deleted and theyre still having tuning issues with it. Figured is post here to see if anyone else had the recall done with a delete and are having no issues and what tuner/tuning company you guys are using. Thanks. Located in Canada.
Click to expand...
Dont post the tuners name…. They can do the recall no issue just make sure you dont have them flash it or if they do just reflash your tune in their lot before driving it
 
Last edited:
H3LZSN1P3R said:
Dont post the tuners name…. They can do the recall no issue just make sure you dont have them flash it or if they do just reflash your tune in their lot before driving it
Click to expand...
My apologies, edited post to remove name. From what my dealer was saying reflashing a CP4 tune on them was causing alot of fuel pressure irregularities causing the truck to not run right. Im wondering if maybe there was a tune out there for the updated 6.7 with the CP3 on it.
 
H3LZSN1P3R said:
Dont post the tuners name…. They can do the recall no issue just make sure you dont have them flash it or if they do just reflash your tune in their lot before driving it
Click to expand...
LOL you said not to name tuner but quoted his post still showing the tuner's name.
 
Alexcollins said:
My apologies, edited post to remove name. From what my dealer was saying reflashing a CP4 tune on them was causing alot of fuel pressure irregularities causing the truck to not run right. Im wondering if maybe there was a tune out there for the updated 6.7 with the CP3 on it.
Click to expand...
They have multiple variations of cp3 tunes give them a call
 
You must log in or register to reply here.
Back
Top