Originally Posted by Brad_SwiftFur
Mine's an '87 IH 66 passenger bus with hydraulic disk brakes. Probably same thing I have.
No doubt, this is definitely four wheel disc brakes. I'd attach photos but it's bad enough getting online with my phone.
I don't believe the power is related, as a brake lock probably wouldn't cause backfire, missing and hesitation. The weird thing about that problem is the random onset (seems to run fine for a while) and it only does it at cruising. The sluggishness and feeling slower starting could've been the brake but I had noticed these symptoms a day ago, the brake thing, as far as I can tell, started last night, which is actually probably a blessing in disguise as I saw sparks and saw the red hot glow when I stopped to look.
Ideally I was hoping someone had a similar bus and knew some part numbers or something as my internet capability is really limited I was hoping to get a more focused search.
Also things just got more interesting when the friendly neighborhood meth head showed up and asked a bunch of questions and offered to do the work, then offered drugs. boy, I can't wait to get out of here.