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Old 10-03-2013, 06:41 AM   #10 (permalink)
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Quote:
Originally Posted by Tesla View Post
I think most vehicles in last 20 years or so do not have valve for heater, instead coolant always flows and they just switch a flap to get air through heater core or to bypass it.
This would be wrong. Most engines need heater settings selected to bleed air when changing coolant.

The coolant must work through the heater coil as the pipe work acts to cool.
Would it work if you idled for a long.... period of time?
The fans rarely need to work in most commutes, as the thermostat opens, the coolant through the radiator should do the trick (and do it better than the coil in the cabin).
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Last edited by toc; 10-03-2013 at 06:42 AM.. Reason: Fingers exceeded brain speed limit.
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