Originally Posted by Car Analogy

I can sense English is not your first language. No problem. We will try our best to understand each other. May I ask your native language? That may prove useful.

You should be proud. Most Americans can only speak one language, and many of us can't even do that very well!

The heating and AC system is pretty simple. There is a radiator that makes heat, and a fan blows air over it and that air goes through vents into the cabin. There is also a sort of AC radiator that makes cold, and the same fan blows air over it, and that air goes through the same vents into the cabin.

The heat radiator gets heat from the engine coolant (antifreeze and water). The AC radiator, called an evaporator, gets its cold from compressing, then uncompressing, a gas.

So if heat works, fan works, but AC blows warm air, then AC components like compressor, the gas pressure, etc are where you look. The cold radiator has no coldness!

For your issie, if the fan fuse doesn't fix it, it could be:

1. A bad fan motor
2. Something stuck in the fan, jamming it
3. An electrical problem that causes the fuse to keep blowing (so your new fuse might go bad right away)

You can usually tell if a fuse is bad looking at it. The wire inside will be broken. But the correct way to tell is using a meter. We'd call it a DVM, or digital volt meter. You ise the Ohms scale and check to see if electricity will flow through the fuse or not (0 or near 0 ohms on the meter).

Originally Posted by kenlui1995

Update!! I was driving the car a few hours ago. The fan motor is working again when I turn on the switch. But after I went back from dinner and started my car on, it does not work again. So far, it only works once.
Right now, I am pretty sure it's not the problem of the fuse, because the fan did work once. Hence, I come up with a conclusion with either is the problem of the fan motor (which I have to buy a new one to replace it), fan resistor, or the problem of the switch of the fan controller (but all the lights on the button comes on, such as AC button and fan level button). What else do you guys think might be the problem?

Originally Posted by S2KCHRIS305

check your cabin filter, sounds very similar to an issue i had a while ago

Originally Posted by Halfassjack

Start car. Turn on blower motor/fan to high. Lightly tap blower motor with something made of wood. Blower motor is above passengers feet.

Originally Posted by kenlui1995

I try your method.. it does not work.. so right now, it is either the motor is dead or it has some problem with the resistor. My friend is going to help me out tomorrow. Hopefully we can figure out what the problem was, so we can make sure we buy the right parts that have to be replaced.