My 94 Sable does not have heat at all. I tested the temperature control,
which is a poteciometer, and it's working OK; I measured its resistance and
it changes smoothly. The AC works fine, but it cools even when I turn the
temperature control to hot. A few months ago the radio started to have bad
reception. After a while I discovered that by turning the temperature
control nub one way or the other the reception got better or worst. It's not
static noise from the potentiometer. It's more as if some electronic circuit
was causing interference. Anyone know anything about this problem?
Thank you, Tony
Assume radio works best with heater system switched OFF.
Sounds like a bad harness ground behind dash.... or poor dash support ground
Static IS interference... if you mean there's a whining, or clacking noise in
the radio, that's the servo's
You might just try to find a heater control replacement in the salvage
yard... remove the control same as a radio.
Google for directions
I have a manual climate control. The air comes out of the correct vents as
set by the selector. It doesn't matter if the heat or the air condictioning
is on or off. Rotting the temprature knob afects the radio just the same,
but it will not afect the temprature.
Does both heater hoses appear hot when your trying to use the heat?
If they are, you have water flow through the heater core. If not,
you may be low on water, have a plugged heater core or other
obstruction. You might try to manual flush out the heater core and see
what kind of water flow you have.
If the heater core appears OK, then you probably have a blend door
actuator problem. The pot on your HVAC controls send a voltage to
this actuator to control its position. This controls the air past the
Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here.
All logos and trade names are the property of their respective owners.