1990 Ford Areostar 3L V6, Heater Is Blowing Cold Air

External Since: Nov 15, 2005 Posts: 1

About 6 months ago the heater core went in my van. I replaced it and about
3 months later the rad went. I replaced it and the thermostat at the same
time. About 2 weeks ago I stopped getting heat. When you move the heat
controls up and down you can hear the baffle/flap move inside the heater
box so nothing seems to be stuck. I was told there may be an airlock. I'm
not sure and I am not sure how to fix it.

External Since: Jul 10, 2005 Posts: 42

One check would be to run the heater then feel the heater hoses and see if
they are hot. If not, you might check the vacuum line connections on any
vacuum-controlled valve. If the connection is OK, pull the vacuum line off
and see if turning the heater on and off creates and releases any suction in
the line.

"fud" <dfuder.RemoveThis@telus.net> wrote in message
news:ba75de5dc6550e6434299f359bc3956a@localhost.talkaboutautos.com...
> About 6 months ago the heater core went in my van. I replaced it and about
> 3 months later the rad went. I replaced it and the thermostat at the same
> time. About 2 weeks ago I stopped getting heat. When you move the heat
> controls up and down you can hear the baffle/flap move inside the heater
> box so nothing seems to be stuck. I was told there may be an airlock. I'm
> not sure and I am not sure how to fix it.
>