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The Hummer Knowledge Base

Cooling the Turbodiesel:

> I am back from my trip to San Antonio, TX. from Santa Clara, CA. The
> results were:
> Hummers and heat don't mix. I was not able to use the AC in AZ/NM. Average
> temp of the Hummer w/o AC was 220! With AC was around 223, just too close
> to the red line!

Thomas - The TDs seem to like to run much hotter as you know :). Usually if you take it into 3rd and drive 55ish you can get rid of the heat. The extra rpms in 3rd spin the water pump faster and the fan of course.


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