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Old 10-10-2012, 07:59 PM   #8 (permalink)
Miller88
Master EcoModder
 
Join Date: Jul 2008
Location: NY state
Posts: 501

XJ Cherokee - '00 Jeep Cherokee Sport
90 day: 12.96 mpg (US)

FoFO - '11 Ford Focus SE
90 day: 36.78 mpg (US)
Thanks: 1
Thanked 51 Times in 38 Posts
From what I can tell the cooling system is working up to par. My experience has been, if the thermostat is not closing, the car will never come up to temperature or will have a hard time keeping it. The car, once up to temperature has no problem keepiing temperature

When I "teset" this, I just turn the heat on for a second, see what I get, then off to let the car continue building heat.

The odd thing is, this is a small aluminum engine with an electric fan that turns on *only* when needed. My Jeep, with a big cast-iron engine and mechanical fan that is ALWAYS spinning full bore ... warms up almost instantly. Never understood that one. Hmmm.
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