Cummins ISB 6.7 360 hspwr normal engine temp range

[et2]

Watching our year old MH temp last night coming home from vacation and I noticed it running at about 201 - 210 mostly at 205 degree. Now it ran going during trip out about 198 - 201 but it was cooler outside, yesterday was 86 degrees - about 10 degrees warmer than the trip out.

The fan kicked in around two times cooling quickly to 192. My question is what are you other people seeing with this engine and normal operating temps? It just seems a little hot. According to Cummins it's within normal temps. Fan on is suppose to be around 212 - 215 and engine shutdown at 220.

So I'm curious if it was hotter in outside air temp say in the 90's am I to expect much higher engine temps or a fan on constantly? The next worry would be mountain pulling in hot temps.

Thanks

[dan-nickie]

In the last couple week mine has been running 198-200 on the flats in above 90 weather.
Same engine.
Any incline and it would heat up a little until I got over the hill.

[DanTheRVMan]

engine does not shut down at 220, but you will get an alarm. typically going up hill. Down shift to get the revs high 2000's. This will pump more coolant thru the engine.

Stopping the engine due to the alarm would be a mistake.

Better would be to see the temp climbing above 210 to 215 and down shift to high rpm before the alarm.

Engine cools faster when pumping at high revs