this may sound like BS

[02screw]

The gauge in the dash was reading HOT in the red. I know the chip does not control any of the cooling system but I was wondering if it was possible that just maybe the position that is supposed to be stock could have some weird tune that is causing a fuel air mixture that will overheat an engine. It will only get hot if I have the chip in the stock position. It is very strange.

[cleatus12r]

Without getting into the mechanics of how a diesel engine actually works, I can tell you that there's nothing wrong with the air/fuel ratio. I'm not trying to tell you that there's no way the tuning can be screwed up, but only overly "rich" air/fuel ratios cause high combustion temperatures in a diesel. If the stock tune doesn't smoke like a pile of burning tires and the RPM is completely controllable with your right foot, then there is nothing going on in that tune that is causing your issue.

[02screw]

Okay thanks for your reply. I will post when I figure out the problem.