TexasCarnivore
SDD Junior Member
My truck is in the shop right now. It has been going into limp mode after cruising a 70 for about 20min. Doesn't do this if you drive it around town all day. But get it up to hwy speed and it's like clock work. The engine light doesn't come on just no power and it won't rev over 2500rpm. Anybodyhave this happen before? Also it has been hot here. The dash gages report normal temps when this occurs. Once we figure this out I'm doing a egr delete, dpf delet and a black maxx tuner. Truck has 125,000 miles. Also suggestions on cold air intake.