Is this normal for a 6.4?

[HM-8404]

I am used to a gas burner and am just learning all the nuances of a diesel. With every gas engine I have had when you start a "cold" engine it will idle at a higher RPM then as the engine warms it will slow to a normal idle. I've noticed with my 6.4 it will always start at normal idle and after idling for a couple of minutes it will eventually climb to a higher idle. Is this normal for a diesel engine? It is just backward from what I am used to.

I do not have the high idle mod.

[strokinpower]

Yes that is normal.

[davidsiv]

Yes it is normal. The idle will kick up to 900 rpms after a few minutes of running and below a certain tempature outside. I think it's 45 degrees


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[HM-8404]

Thanks guys. Just wanted to make sure my choke wasn't sticking open. If these trucks even have a choke. I'm still learning.

[srjd]

No choke. Well maybe something like it in the ECM who knows. If your going to be idling your truck lots you may want to look into the high idle mod. Just do a search lots of write ups about it

[travisH3]

I let the truck do the high idle on its own and mine idles a good bit with no issues. The truck knows when it needs to idle up.