Thanks for the advice. I am suspecting something involving the blender
door. I got a flush kit and flushed the cooling system. As far as I
can tell, I have been able to flush water through the heater core. On
test driving, the heat begins coming through for a few minutes after the
engine warms up. Then the air seems to turn cold. There is a fuse to
the blender door. It is OK, assuming I found the right one. I also
find an opening in an air hose that runs across the firewall, but I
don't know the function of that air hose.
ScottM wrote:
> On my old 97 the hoses go in on the passenger side. Also the vent doors
were
> controlled electricly. I had to replace the motor on the temp part once
> because the gears stripped on it (cheap plastic). The motor was about 3
> inches by 1 inch or so, white in color and mounted under the dash center
but
> a liltle toward the pass side very close to the ashtray. It would make a
> click sound when you turned it full hot and not go all the way to hot.
It
> has an arm that it pushes/pulls when you go hot to cold. You should be
able
> the see it moving when you change the temp. I think I took the clove box
out
> to make it easier to get to but its been a while and I don't remember
for
> sure.
>
> I've heard about alot of heat problems with the taurus like plugged
cores
> and even a bad water pump (corroded fins on the pump inside). The only
ones
> I had was a stuck open t-stat and that motor under the dash.
>
>
> "Moses" <moses@[EMAIL PROTECTED]
> wrote in message
> news:480f0835$0$30229$4c368faf@[EMAIL PROTECTED]
>
>>I suspect problems with air valves also but don't know how to access
them.
>>Wouldn't that require removing the dash?
>>The lack of heat seems inconsitent too. It could be that the core is
>>partially blocked. The Haynes book says you can disconnect hoses and
>>flush the core. However, I can't see where water hoses pass through the
>>firewall the way it is pictured in Haynes.
>>
>>
>>
>>
>>Shawn wrote:
>>
>>>"Moses" <moses@[EMAIL PROTECTED]
> wrote in message
>>>news:480e50cc$0$20173$4c368faf@[EMAIL PROTECTED]
>>>
>>>
>>>>My 99 Taurus heater isn't working right. When the selector switch is
in
>>>>one of the two heater options or in defrost, no hot air seems to come
>>>
>>>>from the vents. On the other hand, if the selector is on vent or AC,
>>>
>>>>heat will come throgh when the temp dial is in the hot position.
>>>>Given the fact that some heat comes through in some conditons, I don't
>>>>think the heater core is plugged. The fan motor runs.
>>>>This is a 99 wagon, 3.0 fi ohv. Any solutions?
>>>
>>>
>>>Check the air gates that control flow throughout the ducting network.
One
>>>may be stuck open or closed. Some
>>>vehicles use a vacuum system to control the air gating & the control
>>>valve may be faulty or plugged up or one
>>>of the vacuum lines may be kinked.
>>>
>
>
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