Engine fan wont turn off

[Rawze]

(03-10-2020 )davidjurss Wrote:  EGR is no longer operational, and no it wasn't tuned by anyone on this site. Everything was working properly up until about a month and a half ago, so I'm pretty certain it's not a tuning issue.

based on what you have said ... engine fan ecm programming issue or not, I would suggest you get that programming checked out by Mommaburt, Unilevers, etc. for a review if you value the life of your equipment. Odds are very strongly against you having a program that is even half-way right, nonetheless not downright destructive to that enigne and/or its turbocharger.