Blower motor keeps running

Tiny
GGLUTHJR
  • 2005 CHEVROLET IMPALA

Electrical problem 6 cyl Front Wheel Drive Automatic 71000 miles

went to work in the morning and it had rained over night and my car was wet. Turned on the fan for my heater and got nothing. Still had heat but fan wasnt running. Than I smelled burning electronics and a little smoke came out of one of my vents. So naturally im thinking something shorted out. Checked the 30amp fuse under the hood and it was blown. Replaced the fuse with my car turned off(keys werent even in the ignition). The second I put the fuse in, my blower motor was blowing air on high without the car having the keys in it. Put the keys in turned the car on tried selecting a different speed setting on the fan and it just stays on high even with the fan set to off. I have to either unplug the blower motor from under the glove compartment or take out the fuse to get the motor to stop running even if my car is running or doesnt have the keys in it. The burning smell was very strong so I think whatever shorted out and fried is inside the car. I also checked all my fuses related to the climate control system and fans and there were all good. Im thinking it could be my blower motor resistor. Any ideas on what the problem might be?

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Friday, June 4th, 2010 AT 8:26 AM

15 Replies

Tiny
SATURNTECH9
  • EXPERT
  • 31,153 POSTS

There is a blower motor speed controller that has shorted out which causes the blower motor to stay on. Here is its location so you can get it replaced. It is right next to the blower motor. Diagram (below)

Please let us know what happens.

Cheers, Ken

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Friday, June 4th, 2010 AT 4:35 PM
Tiny
DARIUS LOVINGMUSIC MITCHELL
  • MEMBER

Im having the same problem with my impala base model. I replaced the blower motor resister and that did not fix the problem. I disconnect the fuse or plug to the resister to shut off the blower. So what else could it be? I pulled my climate control cluster and don't know where to go from there. I disconnect it and the blower is still running. Please help me

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Saturday, September 10th, 2016 AT 12:59 PM
Tiny
2CARPROS KEN
  • ADMIN
  • 11,755 POSTS

Hi DARIUS,

It sounds like it is a blower motor speed control module. Here is a wiring diagrams so you can do some testing with a guide as well. The blower motor is at the bottom of the second diagram.

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

Please run some tests and get back to us so we can continue helping you.

Best, Ken

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Wednesday, February 15th, 2017 AT 9:40 AM
Tiny
COONPAWZ
  • 2000 CHEVROLET IMPALA

Air Conditioning problem
2000 Chevy Impala 6 cyl Front Wheel Drive Automatic 54000 miles

If I put my A/C fan on the 4 or 5 setting, then try to turn it down, the blower stays on the high setting. Even when the car is turned off and the key out of the ignition, it still blows.

The only way I've found to get it turned off is to remove the blower fuse and put it back in.

It seems to happen only when the fan is on the higher settings.

Thanks. Any help is appreciated!

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Wednesday, February 15th, 2017 AT 9:42 AM (Merged)
Tiny
BLUELIGHTNIN6
  • EXPERT
  • 16,929 POSTS

Check for faulty blower motor relay

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Wednesday, February 15th, 2017 AT 9:42 AM (Merged)
Tiny
COONPAWZ
  • MEMBER

Thanx for your help bluelightnin6!

Now all I have to do is find it!

From what I've been reading, it may be kind of tricky to get to, but I'll leave that for my husband !

Thanks again!

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Wednesday, February 15th, 2017 AT 9:42 AM (Merged)
Tiny
BLUELIGHTNIN6
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I believe it's part of the blower motor control module which is attached to the blower motor, that is behind the passenger side dash so yes it is difficult to access.

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Wednesday, February 15th, 2017 AT 9:42 AM (Merged)
Tiny
JEFFBLUMENBERG
  • 2004 CHEVROLET IMPALA
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 125,000 MILES

I have a 2004 Impala and last week my heater fan went on high and I can't turn it down. When I turn off the car it continues to run.

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Wednesday, February 15th, 2017 AT 9:42 AM (Merged)
Tiny
KHLOW2008
  • EXPERT
  • 42,073 POSTS

Here are the diagnostics for the problem.

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Wednesday, February 15th, 2017 AT 9:42 AM (Merged)
Tiny
DJALS5050
  • 2001 CHEVROLET IMPALA

Electrical problem
2001 Chevy Impala 6 cyl Automatic

This morning I drove to work, 90 minute drive. When I turned off my car, the heater/AC fan continued to run. After playing around with teh key and controls, I finely disconnected the battery. (The fan stopped).
When I re-attached the battery, the fan started again.
The speed control does not work now, but the remainder of the climate controls function properly.
I was hoping for maybe a relay, but there are none.

It sounds like some sort of short, but from where. I is just bypassing the control switch.
Any suggestions
Thanks
AL

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Wednesday, February 15th, 2017 AT 9:42 AM (Merged)
Tiny
RHALL77
  • MEMBER

It is most likely caused by your blower motor resistor. It is located under the passenger side of the dash by the blower motor. See if it is burnt and shorting out.

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Wednesday, February 15th, 2017 AT 9:42 AM (Merged)
Tiny
REDFAT
  • 2000 CHEVROLET IMPALA

2000 Chevy Impala 6 cyl Front Wheel Drive Automatic

the blower motor does not shut down after the car is shut off, it just keeps running. What is the problem

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Wednesday, February 15th, 2017 AT 9:42 AM (Merged)
Tiny
BLUELIGHTNIN6
  • EXPERT
  • 16,929 POSTS

First inspect the relay. If relay is OK, check the blower module. If blower is now running with key off, remove main connector, if it turns off then you need to replace the blower module.

Thanks for using 2CarPros. Com!

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Wednesday, February 15th, 2017 AT 9:42 AM (Merged)
Tiny
LCOMBS46
  • 2004 CHEVROLET IMPALA
  • 14,000 MILES

2004 impala when you turn off the car the a/c-heater fan still runs

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Wednesday, February 15th, 2017 AT 9:42 AM (Merged)
Tiny
HMAC300
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  • 49,775 POSTS

This has to be scanned soyou can find out why it's doing that. It could either be the controller processor, control module or a short to ground. But it needs to be scanned to find out for sure.

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Wednesday, February 15th, 2017 AT 9:42 AM (Merged)

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