2014 Peterbilt 367 Dump Truck! My First Truck and Need Your Help!

[dumptruckisx]

Thanks for your reply guys i will ask him if he was talking about the EGR cooler or the valve but i wont take his word for anything as it will be checked out by cummins mechanic in the second week of january. As per Chamberpains suggestions i have started to look into what sensors i could possibly replace on my own and what will require some help but i have seen rawze EGR tune up videos in the past and will be doing that which covers some sensors as well hopefully thats a good start.