As of a few months ago I got a new truck, 2022 Kenworth T680. It's been a really good rig up until last night I started it up and got this horrible squealing anytime the Jake's were used and it would hit higher rpms or if it was accelerating from 5th to 6th gear. It's never had this problem before but in a ten hour period it just came on suddenly. Any help would be appreciated, thank yall!
I warned you not to run those jakes at 2am going by my place! Soooo, I found a radio shack (still open what a find!) and i installed a little high pitched whistler doodad down there underneath all those wires -n stuff! LoL honestly though that sounds like maybe an air hose has a small pinhole in it somewhere, and it's so small it only opens up and whines like that when there's enough pressure going thru the line. If that makes any sense to ys. And I'm not sure how you could test that theory .
Thank ya! I reckon I might try to run a bit of soap over when its goin so I can have a bit of a bubble form, I reckon itd be worth a shot.
At first I thought it was a belt so I've kept an eye on it but now I'm not too sure because for the few seconds in the beginning its sounding like metal on metal but I know it cant be the case, maybe air from some sorta blowback maybe?