SwappedNA

iTrader: (1)

So, I've done my fair share of searching, and I can't find anything that mimics this exact problem. Car running the stock ECU.

With the blower motor on settings 1, 2, and three, and the AC button/light *ON* the blower motor does not function/activate. Nothing whatsoever.

Now, when I turn it to setting 4, the AC LIGHT shuts *OFF* (button still pushed in) and the blower itself finally turns on.....Can anyone make sense of this? Possibly the blower resistor?

AE_Racer

iTrader: (1)

Do you have a Power FC?

SwappedNA

iTrader: (1)

No, I do not. I should have included that in my earlier post, as I did see numerous threads dictating the power fc and factory AC controls not getting along.

Its entirely stock. I haven't seen any other threads reflect how its behaving in my case, though.

Edit: Initial post updated for clarification.

DaleClark

iTrader: (55)

It's the blower motor resistor. I had the same thing happen to my car ages back.

The resistor drops the voltage that the fan sees so it can change the speed. Speed 4 is straight 12v and bypasses the resistor. If the resistor is bad speeds 1-3 will not work, no fan at all.

I bought it new from Mazda, but this was probably 12 years ago. Not sure on pricing or availability.

Dale

SpinningDorito

iTrader: (2)

Should be readily available for $40-$50 from the typical aftermarket brands. I replaced mine a few months ago.

SwappedNA

iTrader: (1)

Thanks Dale, I appreciate the clarification. Looks like that is what I'll be doing! Also, when you pulled yours out, did you notice any carpet/hair on it? Mine had some carpet fuzz on it. I cleaned it off with isopropyl alcohol, no dice, so It's going to need a replacement. One thing I'm curious about, though, Why would the AC light remain illuminated on settings 1-3, but suddenly turn off when put to four? I assume the resistor is to blame for that as well?

DaleClark

iTrader: (55)

Not sure on the AC light, but fix the obvious problem first then go forward.

Can't remember if mine had anything on it, again that was AGES ago. It's a wear item, it's a resistor that gets really hot, that's why it's in the air stream from the fan. Over time I think it just burns up.

Dale