Externally it may appear to be operating correctly, but these valves
commonly leak internally, letting hot coolant pass thru even when the lever
is in the closed position.  If the hoses by the valve are warm, it is not
stopping the flow completely

Larry A.

On Mon, Sep 29, 2008 at 8:00 AM, Chris S <szpejankowski@gmail.com> wrote:

> Is it possible to get hot air through the vents if you hook up the heater
> coolant lines backwards?  I ask because before the engine swap I didn't
> have
> this issue, and now I get warm air even with the temperature slider all the
> way to cold.  I checked the heater valve and it is operating properly.
>
> --
> Chris S.
> Disclaimer: "Death and serious injury may occur"
>