Date: 13 Jun 2005 11:31:16 -0700
From: "yaofeng" <>
Subject: Re: radiator/overheating (was: horn not working????)

What mechanism stops the flow of coolant to the heater core at high tempearture? The heater core coolant circuit is complely unblocked by any device, at least on a 9000 it is so. Coolant in that circuit is pumped as long as engine is running.

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