Hi guys,
Just purchased a brand new 2020 AT4 HD. I have the infamouse thumping sound at idle... (barf).
But confirmed it makes that noise on a few other trucks in person.
What I wanted to ask about was a noise that comes here and there, I think if I get in boost, then slow down to a stop (deceleration). Goes away when truck comes to a stop, happens for a few seconds only.
Does not happen all the time...
I had a waste gate rattle on My M5, not sure if this is the wastegate.
I wanted to see if anyone else has a similar noise.
BTW took it to the dealer, they told me its normal, and diesels make noise. lol
Anyways, thi sis my first diesel, so any feedback would be great!