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View Full Version : Why does my A/C motor fan only work when it wants to?

gt8r14
05-06-2015, 09:56 AM
I recently purchased a 1996 S14, its completely stock. When I bought the car the A/C did not work. I researched and found that my resistor was most likely bad (I only had fan level 4). I replaced the resistor with an OEM unit and the A/C worked perfectly for about a week, and then it started acting up again.

Problem: Suddenly the blower motor fan (under the dash) only wants to work when it "feels" like it. Meaning on day I can have A/C and the next day I may not.Thats basically what happens. It's very confusing and a bit frustrating. I live in Florida and would like to have A/C.
My A/C compressor works and everything, there just isn't any air coming out of the vents.
thegr8one013
05-06-2015, 10:35 AM
are you talking about the blower motor or the electric fan near the radiator and condensor?
gt8r14
05-06-2015, 11:01 AM
are you talking about the blower motor or the electric fan near the radiator and condensor?

Sorry, I am talking about the blower motor in the cabin of the car.
thegr8one013
05-07-2015, 05:42 AM
the only thing i can tell you so you save money is when its not working unplug it and see if your getting power AND ground at the plug. if you arent then its your blower motor.
gt8r14
05-07-2015, 08:53 PM
the only thing i can tell you so you save money is when its not working unplug it and see if your getting power AND ground at the plug. if you arent then its your blower motor.

Thanks! I will look into that tomorrow. I am beginning to think its the blower motor.
gmoneyfosho
05-17-2015, 11:34 AM
this same thing happened in my bone stock 95 until it eventually completely stopped blowing, and i just bought a 97 with an sr swap with AC and the exact same thing is happening. but this time i live in vegas so i HAVE to fix it. ill let you know what i come up with.
gt8r14
05-21-2015, 01:30 PM
this same thing happened in my bone stock 95 until it eventually completely stopped blowing, and i just bought a 97 with an sr swap with AC and the exact same thing is happening. but this time i live in vegas so i HAVE to fix it. ill let you know what i come up with.

I think its the blower motor, which is starting to go out. I would look into that. I read that it can land on a certain part of the blower motor and that explains why sometimes the AC blower works and sometimes it doesn't. Good luck.
S14DB
05-21-2015, 02:43 PM
Usually when the blower motor goes it starts pulling a lot of amps. First killing the resister then itself.

Check the fuses first then the connections. Your hypothesis about the the motor sticking in certain positions is probably spot on. But, make sure it's not just a wonky connection.
gt8r14
05-25-2015, 01:44 PM
Usually when the blower motor goes it starts pulling a lot of amps. First killing the resister then itself.

Check the fuses first then the connections. Your hypothesis about the the motor sticking in certain positions is probably spot on. But, make sure it's not just a wonky connection.

Will look into that, my resistor did die, and I bought a new one. So I am really thinking its the blower motor now.