Temperature control problem

Folks,

I own a 2005 Explorer XLT. It is a V-8, FWD, with 40K miles.

The problem I have is: when the temperature control knob is in the full
cold position, everything is fine. But as I turn the selector to warm and
then hot, I get a banging noise coming from the firewall (I think). I'm not
at all sure how the temperature selector is supposed to work, my guess is
that there is a motor that diverts hot anti-freeze to and from the heater
radiator.

Also, even with the banging noise, the temperature selector seems to be
working in the cold, warm and hot positions.

Any thoughts or ideas on what is causing this banging and what the fix is?

Thanks in advance.

Al, Poughkeepsie, NY

Folks,

After some Google research, I'm about 90% sure my problem is the actuator
motor. I know how to prove or disprove this, before I spend any bucks on
parts.

Happy Halloween!

Al, Poughkeepsie, NY


"Alan E. Seelbach" > wrote in message
...
> Folks,
>
> I own a 2005 Explorer XLT. It is a V-8, FWD, with 40K miles.
>
> The problem I have is: when the temperature control knob is in the full
> cold position, everything is fine. But as I turn the selector to warm and
> then hot, I get a banging noise coming from the firewall (I think). I'm
> not at all sure how the temperature selector is supposed to work, my guess
> is that there is a motor that diverts hot anti-freeze to and from the
> heater radiator.
>
> Also, even with the banging noise, the temperature selector seems to be
> working in the cold, warm and hot positions.
>
> Any thoughts or ideas on what is causing this banging and what the fix is?
>
> Thanks in advance.
>
> Al, Poughkeepsie, NY

On Oct 31, 4:32*pm, "Alan E. Seelbach" >
wrote:
> Folks,
>
> After some Google research, *I'm about 90% sure my problem is the actuator
> motor. *I know how to prove or disprove this, before I spend any bucks on
> parts.
>
> Happy Halloween!
>
> Al, Poughkeepsie, NY
>
> "Alan E. Seelbach" > wrote in ...
>
>
>
> > Folks,
>
> > I own a 2005 Explorer XLT. *It is a V-8, FWD, with 40K miles.
>
> > The problem I have is: *when the temperature control knob is in the full
> > cold position, everything is fine. *But as I turn the selector to warm and
> > then hot, I get a banging noise coming from the firewall (I think). *I'm
> > not at all sure how the temperature selector is supposed to work, my guess
> > is that there is a motor that diverts hot anti-freeze to and from the
> > heater radiator.
>
> > Also, even with the banging noise, the temperature selector seems to be
> > working in the cold, warm and hot positions.
>
> > Any thoughts or ideas on what is causing this banging and what the fix is?
>
> > Thanks in advance.
>
> > Al, Poughkeepsie, NY- Hide quoted text -
>
> - Show quoted text -

How did you come out?