Why does my A/C motor fan only work when it wants to? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

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

Quote:

Originally Posted by thegr8one013

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

Quote:

Originally Posted by thegr8one013

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

Quote:

Originally Posted by gmoneyfosho

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

Quote:

Originally Posted by S14DB

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.

05-06-2015, 09:56 AM	#1
gt8r14 Join Date: May 2015 Location: Gainesville,FL Age: 28 Posts: 6 Trader Rating: (0) Feedback Score: 0 reviews	Why does my A/C motor fan only work when it wants to? 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. Last edited by gt8r14; 05-06-2015 at 11:01 AM..

05-21-2015, 02:43 PM	#8
*S14DB* AFC #1 Join Date: Oct 2003 Location: 昨晩あなたのお母さんの家 Posts: 20,181 Trader Rating: (3) Feedback Score: 3 reviews	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. __________________ Comments should be taken as Opinions not as Statements of Fact

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05-06-2015, 10:35 AM	#2
thegr8one013 Zilvia Junkie Join Date: Jun 2006 Location: nassau, ny Posts: 479 Trader Rating: (1) Feedback Score: 1 reviews	are you talking about the blower motor or the electric fan near the radiator and condensor?

05-07-2015, 05:42 AM	#4
thegr8one013 Zilvia Junkie Join Date: Jun 2006 Location: nassau, ny Posts: 479 Trader Rating: (1) Feedback Score: 1 reviews	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.

05-17-2015, 11:34 AM	#6
gmoneyfosho Zilvia Member Join Date: Jun 2011 Location: Vegas Age: 34 Posts: 221 Trader Rating: (1) Feedback Score: 1 reviews	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.