cm2250 rough idle

[JimT]

(02-13-2020 )Rawze Wrote:  could also be that the turbo is overspooling when in warmup mode, but not quite enough to make it chough yet?
some related info: http://rawze.com/forums/showthread.php?t...8#pid22458

maybe look at the turbo position while it is doing this. Compare it to other ppl's trucks who's system is running properly to get a base line?

Off the top of my head, Insite reports turbo position commanded/measured to be 86/87 percent during scr warmup. This is from memory, so if that sounds way off then it's probably just me.

I do notice a slight fluctuation in boost while it's doing it's scr warmup. It is only about 1psi so I didn't think much of it. Turbo is a reman but actuator appears original.