Most (not all) cars are heated by the engine. When fluid moves through the engine it heats up. This fluid moves through the heater core, a fan moves air over the warm heater coils blowing warm air out to the cars cab.
Only blows cold air with the a/c on while driving, your cooling fan or fan clutch is bad depending on the year, make and model.......... Only blows cold air with the heater on while driving, you will have a bad or broken internal a/c - heater control door.....
You have a bad blower resister..............
how is it my heater control on my ford fiesta flight 1998 only works on no. 4
The heater motor speed resister is burned out.
Possibly
Because the heater pulls the heat off of the motor and uses fans to circulate it to you
replace front heater corefront and rear have independent heater cores
Replace heater motor resistor.
Probably the Heater Fan Thermostat. It may have a different name.
The blower motor speed resistor is burned out.
2001 dodge ram 1500 ac and heater flow regulator switch does not work. works only on defrost. How to fix?
The gas water heater works through a principle of physics which is known as convection. The gas heater is similar to a water heater only that it has one heating unit.?æ