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Old 02-27-2011, 12:40 PM
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JimFreeh JimFreeh is offline
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Join Date: Mar 2007
Location: Hampton Roads, Virginia
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Quote:
Originally Posted by stormyc88 View Post
Bypassing the pump shouldn't hurt anything, especially since you're bypassing the heater core altogether, and since since you're bypassing the heater core, engine temperatures should act the same as if you were running with the heater off.

Yes, and no.

Pump has no effect, but you're also bypassing the monovalve, which stops flow when the heater is off, so you introduce a short circuit for hot water.

Jim
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