Help-A/C blower only works in high speed

nucferr · May 16th, 2004, 01:51 PM

Hi everyone!
I own a 1994 Altima since new-great car. I just got a problem with the Heat-A/C blower only working in HIGH (#4) speed. In speeds 1 thru 3 no fan (but the A/C compressor does kick on with the A/C button depressed). I am guessing the the blower motor is OK as it looks like replacement motors only have two wires so I am guessing some sort of resistor controls the speed. Any ideas when this control is located. Pictures would be appreciated!
thanks

ultimatuc · May 17th, 2004, 01:27 AM

pull the controls, and check the connection. you'll ne to determine which to leads go to the motor. with an ohm meter, check for continuity between those two leads. If you have continuity on each setting, then the swich is most likely good. the resistance should be high on the low setting, and low on the high setting.

good luck

**Asleep** · May 17th, 2004, 03:13 PM

i beleive there is a resistor behind the dash on the passenger side of the vehicle. ill check when i get home tonight, but im sure thats the resistor that controls the fan speed, as long as your switch tests out good, then ill point to the resistor.

KA24Tech · May 18th, 2004, 01:11 PM

It is a problem with the blower motor resistor and I think it is in the air box under the passenger side of the dash. I'll also have to double check or you could call the dealer and speak to parts or service they could probably help you as well.

Troy

nucferr · May 20th, 2004, 03:50 AM

Thanks to ALL. The controller is mounted under the air box so the resistor part is actually in the air flow. The controller looks like a credit card with a multi pin connector. Going to nissan dealer today to see what this beast will cost!

Sanyo · May 20th, 2004, 05:26 AM

For my sentra it was 28 bucks from the dealer or free from junkyards (if it fits in ur pocket it's free

)

pbat · Jul 31st, 2004, 01:26 PM

I just came across the same problem two days ago and Im seeking some clarification. Is the control unit and resistor the same? I have the Haynes manual and in section 3-8, they only show a picture of the resistor, but I cant find one for the control unit. Where is the control unit in relation to the resistor? thanks.

julchek · Jan 30th, 2005, 05:55 PM

Hi, I have a 95 Nissan Altima with the same problem you had with the blower only working on high speed. I was just wondering if you got it fixed and if it was expensive? I don't want to get ripped off seeing I'm a woman...You know how that can happen! Thanks!!!
Julie

rgb03 · Jan 30th, 2005, 08:25 PM

i just fixed the same problem in my car like said in the post back a few there is a resistor if you look on the airbox under the passanger side of car there is two screws that hold in a slim black card type connector just go to the nissan dealer and buy a fan speed resistor take out the two screw pull out the old one and slide in the new one. i think the resistor was like 35 dollars

julchek · Jan 31st, 2005, 09:26 PM

Thanks for the info. Where is this "airbox"? In the inside of the car? Underneath the glove box?

Quote:

Originally Posted by rgb03

i just fixed the same problem in my car like said in the post back a few there is a resistor if you look on the airbox under the passanger side of car there is two screws that hold in a slim black card type connector just go to the nissan dealer and buy a fan speed resistor take out the two screw pull out the old one and slide in the new one. i think the resistor was like 35 dollars

KA24Tech · Feb 1st, 2005, 12:26 AM

The airbox is the large black plastic ducting that consumes the space behind the glove box. Look for the wire harness and plug behind the blower motor (the round metal thing sticking out under the dash on the passenger side. The resistor like he said above is held in with two screws.

Troy

ialafroz · Nov 2nd, 2007, 01:19 PM

I have the actual part described before in my hands, is there any spare part number or where can I get it from ? I was searching the way to post a pic didnt figure it out...

Altima SSS · Nov 2nd, 2007, 03:33 PM

Quote:

Originally Posted by ialafroz

I have the actual part described before in my hands, is there any spare part number or where can I get it from ? I was searching the way to post a pic didnt figure it out...

The dealer or NAPA has them. NAPA is a few dollars cheaper. It only takes about 5 minutes to change out the fan blower resistor unit.

Nissan P/N is: 27150-2J000

http://www.napaonline.com/masterpage...Motor+Resistor

Altima Idiot · Mar 12th, 2008, 01:14 PM

IT IS THE BLOWER MOTOR RESISTOR..I HAVE REPLACED 4 OF THEM SO FAR..DON'T GO TO A JUNKYARD..YOU DON'T KNOW IF THEY WILL WORK OR NOT..I HAPPENED TO FIND AN AFTERMARKET ONE OUT OF A NISSAN SENTRA THAT WAS CUSTOMIZED..I GOT LUCKY AND IT WORKED..IT WAS 5 BUCKS..BUT I WOULD SUGGEST GETTING A NEW ONE AT PARTS AMERICA, AND SO ON AND SO FORTH..I THINK THEY ARE 40 BUCKS..
ALSO,WHEN YOU TURN OFF YOUR CAR,MAKE SURE THE FAN SPEED IS OFF..THIS WILL HELP PROLONG THEM FROM BURNING OUT..TRUST ME..LIKE I SAID I HAVE REPLACED 4 OF THEM SO FAR...

**Asleep** · Mar 12th, 2008, 02:41 PM

why are you yelling?