Blower motor does not work

Tiny
CKANTHONY
  • MEMBER
  • 2004 FORD EXPEDITION
  • 5.4L
  • V8
  • 4WD
  • AUTOMATIC
  • 187,000 MILES
I have an 04 Expedition Eddie Bauer with ATC that the blower does not work in the front. I have replaced the blower motor and the blower motor resistor. Checked the old motor and it actually was fine. A friend used a tester and checked the connector at the resistor and power was there. We jumped the blower motor from this connection avoiding the resistor and it worked fine. That said we though it was the resistor so I put in a new one and the blower still is not working. I am at a loss as to what to do next. Any help would be greatly appreciated.
Wednesday, November 5th, 2014 AT 6:37 PM

36 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 110,101 POSTS
Power to the motor is from the resister, so either there is a broken or damaged wire or you have no ground to the motor. This guide will help along with instructions on the diagrams below.

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

Check out the diagrams (Below). Please let us know what happens.
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Thursday, November 6th, 2014 AT 8:50 AM
Tiny
DAVIDWMILLER
  • MEMBER
  • 1 POST
  • 2004 FORD EXPEDITION
  • V8
  • 2WD
  • AUTOMATIC
  • 108,000 MILES
Air conditioning and heater works however air only comes out the defrost vent. Controls dont do anything when pushed
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Tuesday, July 7th, 2020 AT 3:34 PM (Merged)
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 110,101 POSTS
You have a vacuum leak. Engine vacuum actuates the vent doors. When there is a leak, it will go to defroster and not change. Check under the dash for leaks. With the engine running, you may hear a hissing sound.
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Tuesday, July 7th, 2020 AT 3:34 PM (Merged)
Tiny
GOLF300
  • MEMBER
  • 4 POSTS
  • 2004 FORD EXPEDITION
  • 5.4L
  • V8
  • 2WD
  • AUTOMATIC
  • 165,000 MILES
Ac blower motor only works on high. Replaced resistor did not fix the issue. What else could be the issue?
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Tuesday, July 7th, 2020 AT 3:34 PM (Merged)
Tiny
JOHNNYT73
  • MECHANIC
  • 924 POSTS
Thats interesting as that usually the resistor would correct that issue. I would take the part back and swap it for another to be sure you didnt get a bad resistor.
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Tuesday, July 7th, 2020 AT 3:34 PM (Merged)
Tiny
GOLF300
  • MEMBER
  • 4 POSTS
Already tried that
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Tuesday, July 7th, 2020 AT 3:34 PM (Merged)
Tiny
GOLF300
  • MEMBER
  • 4 POSTS
Any more ideas for this issue?
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Tuesday, July 7th, 2020 AT 3:34 PM (Merged)
Tiny
CJ MEDEVAC
  • MECHANIC
  • 11,005 POSTS
Look at the connectors ( the one for the car)

is it melted/ distorted/ the "males" or "females" (at least some of them) pushed back in the connector and kinda never make contact when the two parts are pushed together?

I'll give you an example with the floor dimmer switch for my '77 jeep cj-5

when it gets wet/ dirty/ corroded/ hot (over a long time) my lights flash on and off. Then off forever, 'till I get a new pigtail and switch)

see my pics at the bottom (i thought I had a pic of it actually melted and pushed back. Cannot locate it)

keep us posted

the medic
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Tuesday, July 7th, 2020 AT 3:34 PM (Merged)
Tiny
GOLF300
  • MEMBER
  • 4 POSTS
All wires and connections look new Also checked all fuses don't know what else to check
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Tuesday, July 7th, 2020 AT 3:34 PM (Merged)
Tiny
JOHNNYT73
  • MECHANIC
  • 924 POSTS
The only thing else I could think of is the switch itself.
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Tuesday, July 7th, 2020 AT 3:34 PM (Merged)
Tiny
EXPEDITIONLOVER
  • MEMBER
  • 1 POST
  • 2003 FORD EXPEDITION
  • 2WD
  • AUTOMATIC
I was wondering where the blower motor is located and how to replace with a new one?
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Tuesday, July 7th, 2020 AT 3:34 PM (Merged)
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Behind dash you have to remove scuff plate and side pane. lift up carpet on pass side you'll see it. Here is a guide to help walk you through the steps with diagrams below to show you on your car

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

Check out the diagrams (Below). Please let us know if you need anything else to get the problem fixed.
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Tuesday, July 7th, 2020 AT 3:34 PM (Merged)
Tiny
SARTSMAN
  • MEMBER
  • 2 POSTS
  • 2003 FORD EXPEDITION
  • V8
  • 4WD
  • AUTOMATIC
  • 65,000 MILES
The blower in my 2003 Expedition does not operate when it is set to the lowest fan speed (#1) position. All is well when I use any of the other three fan speeds. Any suggestions on where to begin troubleshooting this problem?
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Tuesday, July 7th, 2020 AT 3:34 PM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Replace the blower motor resistor
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Tuesday, July 7th, 2020 AT 3:34 PM (Merged)
Tiny
SARTSMAN
  • MEMBER
  • 2 POSTS
I will try that this weekend. Thanks for your quick reply
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Tuesday, July 7th, 2020 AT 3:34 PM (Merged)
Tiny
LANE87
  • MEMBER
  • 2 POSTS
  • 2003 FORD EXPEDITION
  • 150,000 MILES
This problem is slowing getting worse over the last few years. When using climate control (AC/Heater/Vent) the blower sounds like gears are stripped on level 4 (less efficient airflow and making a clicking clunking noise). More recently it began doing it on the level 3 setting. Clicking sound correlates with fan speed setting.

The rear unit also clunks but in a slow 1hz pulsing sort of way where the air surges after each clunk. Any air flow setting = same clicking rate.

Is there a way to fix this without having to buy an entire blower?

Thank you!
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Tuesday, July 7th, 2020 AT 3:35 PM (Merged)
Tiny
DJCL
  • MECHANIC
  • 767 POSTS
Remove the blower motor and see if something is in the wheel. Very often mice and. Rats get in there and make a nest
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Tuesday, July 7th, 2020 AT 3:35 PM (Merged)
Tiny
LANE87
  • MEMBER
  • 2 POSTS
It wouldn't work on 1 and 2 speed if there were a rats nest in there. I need to know if the there are gears that can get stripped and if they are repairable rather than purchase a new blower unit.
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Tuesday, July 7th, 2020 AT 3:35 PM (Merged)
Tiny
CADIEMAN
  • MECHANIC
  • 3,544 POSTS
Sounds like the cage is bad. It came apart
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Tuesday, July 7th, 2020 AT 3:35 PM (Merged)
Tiny
DJCL
  • MECHANIC
  • 767 POSTS
Verey offten somthing will get in the blower wheel assy and the first 3 speeds work fine bet hi makes noise. Don't replace the blower just remove it to inspect it. And there are no gears in there
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Tuesday, July 7th, 2020 AT 3:35 PM (Merged)

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