I know this won't affect 96% of you guys. But like most of you I have my throttle body coolant line bypassed. Well, it was about -25 degrees this morning when I went to get a coffee. Cruising down the road, I let off the gas to slow down and the truck didn't react. Hit the clutch wouldn't idle down. So, I just gave it a shot of gas. That freed up the butterfly. Pulled over and the TB was just frosted right over frozen.

So just a heads up, it can happen and it is there for a reason.