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Blower motor randomly changes speed

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Old Sep 22, 2019 | 11:39 AM
  #1  
Legionnaire1856's Avatar
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Blower motor randomly changes speed

Hey guys,
I just got my Maxima a month ago and the blower speed seems to change when I come to a stop, or accelerate. I feel like it could blow harder when it's on maximum, and sometimes it does.

I researched and couldn't really find anything about the motor changing speeds. Everyone seemed to be having problems with it not working at all or being stuck at full speed.

Has anyone had any experience with this?
Old Sep 22, 2019 | 03:43 PM
  #2  
DennisMik's Avatar
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Do you have the auto climate control where you set the temperature with a **** and the number is displayed in the control panel? Or do you have the manual controls where the temperature is controlled by sliding a lever and there is no number display?

With the auto climate controls, when the temperature in the car starts to get close to the temperature you set it for, the fan will decrease. It will only go up if the temperature in the cabin goes up. But the blower slowing down when you come to a stop is not the way it is supposed to work. My first guess is that the blower motor is on its way out, the bearings are beginning to bind.

You might want to get a voltmeter and check the voltage when the car is running, at idle, at 2000 rpm, with no accessories turned on, with everything turned on such as high beam headlights, a/c with blower on hi, etc.

Also, tell us the year of the car. Nissan made changes every year.
Old Sep 22, 2019 | 04:51 PM
  #3  
Legionnaire1856's Avatar
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Originally Posted by DennisMik
Do you have the auto climate control where you set the temperature with a **** and the number is displayed in the control panel? Or do you have the manual controls where the temperature is controlled by sliding a lever and there is no number display?

With the auto climate controls, when the temperature in the car starts to get close to the temperature you set it for, the fan will decrease. It will only go up if the temperature in the cabin goes up. But the blower slowing down when you come to a stop is not the way it is supposed to work. My first guess is that the blower motor is on its way out, the bearings are beginning to bind.

You might want to get a voltmeter and check the voltage when the car is running, at idle, at 2000 rpm, with no accessories turned on, with everything turned on such as high beam headlights, a/c with blower on hi, etc.

Also, tell us the year of the car. Nissan made changes every year.
Ah yes, I forgot to mention that it is a 2000 model, with the standard climate control...not auto. Maybe it is the blower motor, then. That would make sense that the g-forces on the stop and go of my vehicle would make a difference on binding bearings.

It shouldn't be hard to change out, should it? And is this something I can go cheap on or would I be better off buy OEM for this one?
Old Sep 22, 2019 | 06:11 PM
  #4  
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Originally Posted by Legionnaire1856
Ah yes, I forgot to mention that it is a 2000 model, with the standard climate control...not auto. Maybe it is the blower motor, then. That would make sense that the g-forces on the stop and go of my vehicle would make a difference on binding bearings.

It shouldn't be hard to change out, should it? And is this something I can go cheap on or would I be better off buy OEM for this one?
Easy replacement. 4th gen fits, too.

Hmmm, looks cheap on ebay, now.
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