No AC or heat

2004 NISSAN MAXIMA
169,000 MILES • AUTOMATIC
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CHASITI
  • MEMBER
  • 2 POSTS
Please help! I bought this car a few weeks ago. When I test drove the car the AC and heat was blowing great. Literally the same day while driving it would go off and come on and go off randomly. The next day it quit altogether. Sometimes I can barely feel air coming out of the vents. I have the glove box off right now but I do not know what to do next to try to find out what the problem is. I have nobody to help me in any way. But I desperately need heat for my two week old baby. Unfortunately I do not have the funds to take it to a mechanic right now due to just having a baby. So if there is anything anyone can tell me please do.
Thanks in advance!
Nov 27, 2018 at 10:58 PM
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ASEMASTER6371
  • ✓Experienced Mechanic
  • 52,796 POSTS
Good morning,

The most common issue for this is the blower motor itself. It is under the dash right side. I will attach a picture for you to view.

Roy

https://www.2carpros.com/articles/low-or-no-air-flow-from-vents

https://www.2carpros.com/articles/blower-fan-motor-works-on-high-speed-only

BLOWER MOTOR

Removal and Installation

REMOVAL
1. Remove the blower unit.


imageOpen In New TabZoom/Print

2. Release the 8 tabs attaching blower motor to blower unit case and then remove it.

INSTALLATION
Installation is the reverse order of removal.
Image (Click to enlarge)
Attached Media
Nov 27, 2018 at 11:51 PM
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CHASITI
  • MEMBER
  • 2 POSTS
Thank you. So can I ask you this, if the cabin air filter has never been changed could that cause it? Probably not. Also, I have read something about a resister? Do you have a link or picture that would kind of show what I need to do to test the blower motors power? Thank you
Nov 28, 2018 at 12:09 AM
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ASEMASTER6371
  • ✓Experienced Mechanic
  • 52,796 POSTS
No, to the filter. That would just stop flow of air but you would here the motor run.

Resistor attached.

It is right behind the blower motor on the case.


Roy

Image (Click to enlarge)
Attached Media
Nov 28, 2018 at 12:25 AM
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