Started hearing an exhaust sound tapping my intake cover doing a post trip inspection on the truck. Popped the cover off and slid a sheet of paper under the lid. At idle in park it was blowing the paper up, not sucking it down.. Not sure if that matters but it gets better..
I was hearing a howl and that got louder after turbo lag ( higher rpm around 50 -60 mph). This was coupled with a decent vibration that permeated the cab.
The sound was like I had put a beefy set of MTs on my truck and they were just humming.
But I dont have aggressive tread, and typically it's a quiet smooth ride.
I dont know if it's a hub, the turbo, transfer case, or maybe even an exhaust valve. Something isnt right with this truck and it's really got me stumped.
No codes, boost fine, trans temp sitting between 111 and 128, engine temp around 202, 2012 6.7 with egr delete, and a turbo back.
I fill at a high traffic pilot, and use Lucas oil fuel additive at every fill up.
Thoughts?
Bookmarks