Blower motor works intermittently

Asked by Nov 19, 2014 at 12:52 PM about the 2005 Buick LeSabre

Question type: Maintenance & Repair

2005 Buick lesabre

11 Answers

20,130

Check the blower motor and blower motor resistor. They are both next to each other under the dash near the firewall behind the glove box. Look for lose wires and melted plugs. If the blower works but only on high speed only it's going to need the blower motor resistor replaced.

9 of 9 people found this helpful.
615

Check the brushes.

2 of 2 people found this helpful.
20,130

Can't they are sealed units.

1 of 1 people found this helpful.
615

I had the same problem. and took the motor apart and checked the brushes.

3 of 3 people found this helpful.
20,130

Cool(no pun intended)! Where did you find replacement brushes at?

2 of 2 people found this helpful.
90

To TransAm77 - I've had this issue on a few occasions with my Century and offer my experiences for your critique: 1. If blower only works on high, then likely it's the resistor on the motor but not always. 2. If the blower works at various speeds but doesn't always, then it could be the motor going bad or it could be a poor electrical connection. a. I've run a jumper wire from power to the motor bypassing the controls and the resistor. If the motor works on every attempt I start looking for bad connections either from the fan control to the resistor or the resistor to the motor. One time it was just a loose wire - simple fix. I've replaced the resistor when the blower only worked on high and the system was restored. When it wouldn't run at all, even with the jumper wire, I've replaced the blower motor and it worked fine. One time however, it only worked on high and intermittently. I replaced the resistor with no change in performance. Fortunately, my parts store allowed me to return the resistor. (That's pretty rare with electrical parts.) Upon further inspection I found the problem to be a faulty fan control switch on the dash. I pulled the switch out, took it apart (not recommended) and found the contacts to be oxidized. After I cleaned up the contacts and put it all back together, it worked fine. I recommend, if it is the blower control, replace the switch because it wasn't made to take apart and in most cases you'll likely have a less than fully functional switch after reassembling.

9 of 9 people found this helpful.
20,130

Yea what RunTowin said! LOL nice detailed answer.

615

My local Hardware store sell brushes. I had to customize them but less than $3. Sometimes re positioning the brushes gives the motor more life.

1 of 1 people found this helpful.
20,130

Ahh good to know, good to know.

1,470

It can also depend on the type of A/C in your car. The standard unit has a resistor The Deluxe/automatic A/C (the one where you set the temp number and the car maintains that temp) will have a control module. It has a heat sink and in in the ductwork, I am attaching a picture of one from a 1990 Buick, they are different but do the same function. It is #1 in the picture

1 of 1 people found this helpful.
20

The solution I used may sound strange but here it is. I replaced the extremely dirty cabin filter. The blower motor now works 100% of the time. If your cabin filter looks even somewhat dirty, remove it. If the blower motor then works for the next couple of days, install a new filter. This solution is quick, very easy and cheap (about $20). I truly do not understand why this works, but it did! The testing of the solution spanned about 40 contiguous hours, with air temperatures of from 39 F. to 112 F. and altitudes of from 2000 to 6600 ft. During this time the car engine was started and stopped 15 times. Good Luck!

2 of 2 people found this helpful.

Your Answer

LeSabre

Looking for a Used LeSabre in your area?

CarGurus has 1,851 nationwide LeSabre listings starting at $999.

ZIP:

Buick LeSabre Experts

  • #1
    Tom Demyan
    Reputation
    2,240
  • #2
    John Saffrahn
    Reputation
    1,980
  • #3
    Austin Gaboda
    Reputation
    1,430
View All

Related Models For Sale

Used Buick Park Avenue
423 listings starting at $1,995
Used Buick LaCrosse
339 Great Deals out of 18,228 listings starting at $1,950
Used Chevrolet Impala
480 Great Deals out of 33,615 listings starting at $777
Used Buick Lucerne
112 Great Deals out of 2,639 listings starting at $1,848
Used Buick Regal
170 Great Deals out of 9,211 listings starting at $2,500
Used Buick Century
803 listings starting at $1,661
Used Mercury Grand Marquis
32 Great Deals out of 1,734 listings starting at $1,950
Used Toyota Camry
1,046 Great Deals out of 68,980 listings starting at $295
Used Chevrolet Malibu
1,076 Great Deals out of 72,017 listings starting at $1,896
Used Honda Accord
1,031 Great Deals out of 60,523 listings starting at $999
Used Dodge Charger
418 Great Deals out of 27,419 listings starting at $2,495
Used Cadillac DeVille
1,618 listings starting at $1,995
Used Pontiac Bonneville
518 listings starting at $1,799
Used Ford Taurus
248 Great Deals out of 16,557 listings starting at $1,850

Used Cars For Sale

2005 Buick LeSabre For Sale
14 Great Deals out of 315 listings starting at $1,450
2004 Buick LeSabre For Sale
4 Great Deals out of 332 listings starting at $999

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.