Climate Control Adds Heat in AC Mode

Bernie Benz b.benz at
Thu Jun 23 09:10:03 EDT 2005

> From: michael <mdearing at>
> I recently replaced a leaking heater core, a valve, and a temp sense
> fan in CC system. Ever since then, the heat is always somewhat on, when
> the CC is off and when in Auto (for AC) mode. What's holding open the
> coolant control valve?
It's a normally open valve.  You must have a hose disconnected or a vacuum

> - michael

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