Fan blower will only blow in dash and not in defroster
I have a 2005 kia sorento v6 and when the car is not running it will blow on defroster. However when the car is running it will not transfer to defroster. Seems like an air problem maybe. the car runs fine.
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More than likely it's your blower motor resistor, but first thing is first check for blown fuses. If fuses are all intact locate the resistor which is usually located under the dash on the passenger side close to the blower motor case.( which will be a black plastic cylindrical box) The resistor will have a wiring harness running to it. With the key in the on position and the fan turned full on slowly move the harness around if the fan starts working, you have a bad connection or broken resistor. Which is common since people accidentally catch the wires with their feet or stretching on a long trip. If you replace the resistor disconnect your battery first, resistor is usually held in with a couple of screws, remove and be careful when installing new resistor they can be a bit fragile, best of luck!
Possible that the vent control is blocked or is being turned off. you will need to check this out or it can be fault within the blower, the vent control or a physical block. The loss of cooling can be due to many reasons and it can be related to clogged evaporator, faulty, compressor, low gas or faulty fan/condensor. I think you must take consensus before any part is changed, check all the controls, check fan or it might need a resetting of the blower/evaporator unit.
lol thats gotta be annoying. you might have to take a part the dash or glove box in order to get it your blower. in my car i had to take out the whole glove box in order to get to my blower. there is probably some kind of guard over the fan so you can either take that off or use 1 of them reach tools and reach thru and grab that little bugger
If the blower moter only works on hi speed it is the blower motor resistor that is bad. The blower motor resistor is located under the passenger side of the dash next to the blower motor. It is not necessary to remove the blower motor to change the resistor.