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No air movement

Tiny
JOSEPH RUDDEN
  • MEMBER
  • 2007 FORD ESCAPE
  • 2.8L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 150,000 MILES
I have replaced the blower fan, the resistor, and cabin filter, still only small amount of air comes out. Fan runs in all speeds, vents will change position and low air in all vents. Any thoughts on what else to look at?
Tuesday, October 1st, 2019 AT 1:06 AM

5 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good morning,

From your description, it sounds like there is an obstruction in the vent system not allowing any airflow to any of the outlets.

I would remove the blower fan again and see if there is anything in the ducts. Get a bright light and look up in there and look for something in the ducts.

Did your replacement motor have a new cage on the end?

Roy
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Tuesday, October 1st, 2019 AT 2:32 AM
Tiny
JOSEPH RUDDEN
  • MEMBER
  • 3 POSTS
I put the old cage on the new fan motor. I also have taken the fan and glove box out to see if anything was blocking it and as far as my hand could fit I didn't feel anything. I'm starting to wonder if the new motor spins opposite direction of the old one, I was going to switch the polarity and see if that works. Have you ever heard of that being a problem with replacement motors?
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Tuesday, October 1st, 2019 AT 3:47 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Yes, it could be. Give it a try and let me know what happens.

Roy
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Tuesday, October 1st, 2019 AT 3:53 AM
Tiny
JOSEPH RUDDEN
  • MEMBER
  • 3 POSTS
FYI.
It worked. Switched polarity works great now.
That one goes in the mind vault, lol.
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Friday, October 4th, 2019 AT 11:17 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good find.

Roy
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Friday, October 4th, 2019 AT 11:23 AM

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