Hey all,
Tried searching for similar issue, unable to find anything.
Noticed about a month ago, now starting again, my fuel economy would start to drop dramatically and when I hard accelerate there is a very loud air sucking or blowing noise coming from the engine bay. Took it into the dealer to have it inspected and they could not find any issues. Checked all turbo hoses and did find any loose connections or leaks and of course, when they drove it, they could not replicate the sound. Normally when I let off the throttle, my economy goes to 99mpg but when I notice this issue it only goes to about 65mpg max.
Could it be trying to regen the DPF? I don't normally drive more than 20 minutes in the morning and 20 minutes in the evening to and from work. In summer the truck sees a lot more because I am towing a camper hundreds of miles.
Not sure what other information I can provide to the community to explain the issue more but I am concerned that it could lead to more issues. I only have about 7,600 miles on the truck right now.
Thanks in advance for the help!