The rear defrost is electric. The heater works off the hot water in your radiator running thru it and a fan blowing the heat into your compartment.. check your thermostat, it could be that your heater core isn't getting and water to it, that is were your car get's it't heat from, if not that it could be lack of water
That means either you have air in your heater core or your heater core is being bypassed
a heater hose runs from intake to heater core to radiator. the heater core is were the heat comes from inside the car as well as defrost
Yes they have a heater/defroster.
ihave a 1986 chevette that when i turn defrost on it blows out heat and when i put heater on it blows out only cold air? ihave a 1986 chevette that when i turn defrost on it blows out heat and when i put heater on it blows out only cold air?
it should if you have the heater control in the defrost position this is to remove the moisture from the air
The fastest way to defrost a windshield is to turn the defrost vent on without heat or simply open the windows. Another option is to warm the inside of the car by turning the heater on.
Blocked heater core, faulty heater valve, disconnected connection to the heater valve.
Yes, the ac will run in the defrost position to dry the windshield.
Most likely a bad or disconnected vacuum hose to the defrost/floor selector in the heater ducting.
2001 dodge ram 1500 ac and heater flow regulator switch does not work. works only on defrost. How to fix?
the heater core is going out
you have a fuse out...