was there something on your dash that fell in the vent, a bad fan will make noise all the time.
Blocked heater core, faulty heater valve, disconnected connection to the heater valve.
There are a couple of reasons why a 1999 Oldsmobile Alero ac heater to stop working. The heater coil may need to be replaced or the HVAC blower motor may need to be replaced.
In many cases leaves can cause smoke to blow through the defrost of a 1990 Ford F 150
alve, check vacum line first (on heater valve)
most likely your heater controls run via vacuum lines. cracked or broken lines could cause this.
Look for a leak in the heater/defrost system. Most times it is caused by a minor water leak in the heater system. Steve
A leaky heater core can do that. Also if the AC is not operative, the defrost mode can't dry the cabin air.
NO! 100-120F setting normal. 140F can cause accidental scalding.
No, not if it's on a heat setting. Most home thermostats have a "Fan" setting that will blow cold air if the attic is cold.
The smoke is actually antifreeze mixed with air. The most common cause of this is a leaky heater core.
check the drain hose on the out side of the fire wall, most time on the pass side. if its cloged un cloge it and clean out the heater box
The most common cause for the defrost not properly working is a malfunctioning blending door. The blending door might be stuck halfway open. This would cause the defrost not to work unless the fan is on high.