Blower fan motor is not working?

Tiny
SARAHJAMES
  • MEMBER
  • 2 POSTS
I slapped on it a bit and it did worked. I hit the passenger side dash, how do I get to the actual parts?
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Thursday, January 21st, 2021 AT 9:07 AM (Merged)
Tiny
SCARBROUGHMD
  • MEMBER
  • 5 POSTS
It sounds like your blower motor is going bad. The blower motor and module are located on the passenger side below your glove box remove the vanity panel to access them. Check the plug for burnt or melted terminals while you are there
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Thursday, January 21st, 2021 AT 9:07 AM (Merged)
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,643 POSTS
Excellent addition to this thread! Please feel free to help out whenever you are on the site :)
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Thursday, January 21st, 2021 AT 9:07 AM (Merged)
Tiny
MOOKJAY
  • MEMBER
  • 3 POSTS
  • 2003 CHEVROLET MONTE CARLO
  • 3.8L
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 160,000 MILES
My blower motor does not work on any settings. When I first got the car all the controls worked then one day it just stopped altogether. I have checked all the fuses with my test light and they are all good. I switched out the IGN relay with the blower motor relay to test them as well and everything seems in order. I have tested the blower motor with a power supply and it does spin. None of the climate controls are functioning on the climate control either (rear defroster etc). I recently purchased a new blower resistor and that didn’t help. I also got a climate control head unit from the junkyard and that did not work either, did the same as my old one. The LED button light on the climate controls a/c button and the button that lets outside air circulate in the car both light up when turned on certain fan speeds but still the blower motor does nothing. I also tested the 5 prong connector that connects into the resistor with my test light and it lit up. The positive cable from the resistor however did not light up when I tested it but this was on a new unit and old unit too. I am at a loss and do not know the next step are, as I can’t find a wiring diagram anywhere. I have heard it could be a faulty ignition switch but I don’t want to keep replacing things that are already functioning.
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Thursday, January 21st, 2021 AT 9:07 AM (Merged)
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
It sounds like you lost the ground connection but to be sure this guide will help us test it.

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

Please run down this guide and report back.
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Thursday, January 21st, 2021 AT 9:08 AM (Merged)
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
I did not include one for blower relay as that is in under hood fuse box.
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Thursday, January 21st, 2021 AT 9:08 AM (Merged)
Tiny
MOOKJAY
  • MEMBER
  • 3 POSTS
Thanks for the image. I will double check them again but I am almost positive that they were good fuses. One last questions before I start taking apart my dash again. I have manual controls on my climate control. So I Have a resistor as well as a control module? I was under the impression only automatic climate controls had a control module.
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Thursday, January 21st, 2021 AT 9:08 AM (Merged)
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
The control module is what turns the heat and air conditioning on in regards to you taking dash apart do yourself a favor and get it scanned because if the module is bad it will need to be programmed by a mechanic for it to work.
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Thursday, January 21st, 2021 AT 9:08 AM (Merged)
Tiny
MOOKJAY
  • MEMBER
  • 3 POSTS
Good job it was a bad ground I got it going again thank you.
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Thursday, January 21st, 2021 AT 9:08 AM (Merged)
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Glad you could get it fixed, that kind of problem can be tough. Please use 2CarPros anytime we are here to help.
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Thursday, January 21st, 2021 AT 9:08 AM (Merged)
Tiny
TREDUBB
  • MEMBER
  • 5 POSTS
  • 1979 CHEVROLET MONTE CARLO
  • 77,000 MILES
My blower started working on low speeds then died out I put new resistor and switch even changed the blower still nothing what should I do to get my fan working? No power checked fuses under dash even swapped relay. With another one nothing so I put all parts back that I had changed except resistor is still new
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Thursday, January 21st, 2021 AT 9:08 AM (Merged)
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
What about the motor itself? Did you check that for operation?

Roy
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Thursday, January 21st, 2021 AT 9:08 AM (Merged)
Tiny
TREDUBB
  • MEMBER
  • 5 POSTS
I put a new blower motor and still nothing
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Thursday, January 21st, 2021 AT 9:08 AM (Merged)
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Is the blower motor properly grounded?

Roy
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Thursday, January 21st, 2021 AT 9:08 AM (Merged)
Tiny
TREDUBB
  • MEMBER
  • 5 POSTS
The usual spot where it grounded is not holding so I tryed the body of the car rite now I'm working on it iput a power wire to the blower. To the battery and one to the ground wore from the relay to the neg side got nothing
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Thursday, January 21st, 2021 AT 9:08 AM (Merged)
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Got nothing? This means the blower motor has a problem itself. You may have a defective new motor.

Roy
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Thursday, January 21st, 2021 AT 9:08 AM (Merged)
Tiny
TREDUBB
  • MEMBER
  • 5 POSTS
Ok so regaurdless of the old or new one I should get sumthg out of it if I plug it up or jump it I just did the original one that was in the car I don't get no indications either way to plus yesterday when I chg the resistor it still was doin the same thing b4 it died I turned off the controls and I swore I still heard it running with the car on I felt it b4 I shut the car off and I felt vibration like the motor was moving with the air being off
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Thursday, January 21st, 2021 AT 9:08 AM (Merged)
Tiny
TREDUBB
  • MEMBER
  • 5 POSTS
After I jumped the wires t my blwere motor to the battery I had no results but I left the control on high and turned the ignition to off I heard a buzzing snd coming from where the resistor is what does that mean? And it went away when turn the controls off and unhooked the jumped wires
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Thursday, January 21st, 2021 AT 9:08 AM (Merged)

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