2017 Ram 3500 6.7 cummins surging

[Cummins12V98]

It is all stock so I still have a lot of warranty left. The only mod I have made is putting a S&B cold air box on it. Would cleaning the map sensor help and whats the best way to clean it?

If it has a oil type filter that most likely is the cause!!! These newer truck do NOT need any modifications to the air intake.

 

[jhenderson]

He already stated it’s a dry filter. That’s why your supposed to read the whole thread.

 

[Phillip Barnes]

May not be relative, but I had a second gen that I started “upgrading”. One day for no apparent reason it started “surging”. After exhaustive efforts to isolate the problem, out of extreme frustration I took the truck to the local dealer and directed (did not discuss or ask for opinions) them to do a re-flash on the TCM. The problem remained for 1-1/2 days and vanished. In that case it was the TCM and apparently, unlike FMC and GM, Dodge had a progressive TCM that “learned” your driving style.

Just a wild shot in the dark but maybe...

 

[Alan Reagan]

Sounds like the Fuel Pressure Regulator may be bad. That will cause surging like you are describing. Warranty should fix it. The dealer should be able to check fuel pressure and see if it is stable or not.

 

[Igottaroll]

I realize this is an old thread, but what about the 2 fuel filters he changed, possibly sucking air somewhere?