Isx shuts down while driving

[Downthehaul]

Truck is a 2010 international prostar with an ISX. Has all emissions on it.

Months ago I had an incident where the engine shut down while driving. I noticed the throttle stopped responding and when I took it out of gear it shut all the way down. It started back up pretty fast, but then a few weeks later it happened again. It’s happened more and more frequently, at this point it’s every 5 minutes.

I can tell when it’s going to happen, it loses all power so I take it out of gear, wait for it to shut down and start it again while going highway speed. Otherwise i’d have to stop every 5 minutes.

Insite is showing codes for exhaust leak, which it does have, it’s so thick that when I slow down to 15 the smoke comes in through the cab A/C.

Can that exhaust be causing the shutdown? Can it be something else? Also have a water leak I need to diagnose.