Blower motor

[Spiffyrides]

Hi All,

having an issue with my front blower motor on my 2016 expo EL, 3.5 ecoboost, 4wd with climate control. I looked at other blower threads but none seemed quite like this issue.

Issue began where the front did not seem to be blowing with much intensity, blowing, just a very small amount. Blower motor was making some noise as it if had a very large amount of load on it, an electric motor him or buzz sound is the best I can describe it.

Upon researching forum posts, some reported issues with the blower motor resistor or with debris in the blower cage. I’ve replaced the resistor with no change and didn’t find anything in the blower when I removed it.

The part that is odd to me is if I remove the blower from the air box and run it, it blows fine, speeds change, it will go up to high power etc. if I install it in the airbox, it will not. I’ve even installed the blower without the screws and held it in place. When I do this, if I lower the blower a small amount, it will work, but will “load up” and slow down if I put it all the way in. On a visual inspection, I don’t see any place it’s hitting or rubbing anything.

hoping that someone here may have some ideas on this.

Thanks in advance,
Frank

 

[JExpedition07]

I wonder if it worked when you held it in place because the way it pushes on the housing. Have you tapped it at all? On my 2007 I had to replace the blower motor because it was touch and go like you describe....it kept turning off and if I hit the housing it would turn on again. New Motorcraft unit fixed it. Let me see if I can link you my old thread. Is the cage on the shaft good? Obvious I know just trying to bounce any ideas.

The resistor or Blower Control Module connector is also known to fry and cause connection issues.

 

[Spiffyrides]

No play to speak of radially on the blower shaft. I also replaced the resistor and it had no effect. It’s almost as if the air box is not deep enough to accept the blower. When I put it up there by hand, it seems to have problem when I put it all the way in against the places where the screw go to hold it in. It’s when I lower it down about an 1/8 of an inch, that it will work as expected.

 

[99WhiteC5Coupe]

Hi All,

having an issue with my front blower motor on my 2016 expo EL, 3.5 ecoboost, 4wd with climate control. I looked at other blower threads but none seemed quite like this issue.

Issue began where the front did not seem to be blowing with much intensity, blowing, just a very small amount. Blower motor was making some noise as it if had a very large amount of load on it, an electric motor him or buzz sound is the best I can describe it.

Upon researching forum posts, some reported issues with the blower motor resistor or with debris in the blower cage. I’ve replaced the resistor with no change and didn’t find anything in the blower when I removed it.

The part that is odd to me is if I remove the blower from the air box and run it, it blows fine, speeds change, it will go up to high power etc. if I install it in the airbox, it will not. I’ve even installed the blower without the screws and held it in place. When I do this, if I lower the blower a small amount, it will work, but will “load up” and slow down if I put it all the way in. On a visual inspection, I don’t see any place it’s hitting or rubbing anything.

hoping that someone here may have some ideas on this.

Thanks in advance,
Frank

https://static.nhtsa.gov/odi/tsbs/2019/MC-10163573-0001.pdf

 

[grdsman]

Is it possible that the cabin filter is plugged up? Seems like a long shot, but why else would it work before putting it inline with the intake and output?


Sent from my iPhone using Tapatalk

 

[99WhiteC5Coupe]

Is it possible that the cabin filter is plugged up? Seems like a long shot, but why else would it work before putting it inline with the intake and output?


Sent from my iPhone using Tapatalk

The 2015 - 2017 Ford Expedition models do not have a HVAC air filter.

 

[Trainmaster]

Make sure the blend doors are working as they should. If not, this could cause back pressure. Perhaps a blend door motor's messed up and staying closed? You state that you have climate control. Maybe the climate control computer's not opening them properly? If regular A/C, the controls are also electronic and they may have failed and not operate the doors properly.

 

[Spiffyrides]

Interesting idea on the blend doors, what is the easiest way to check those? I do know the recirc door located above the blower is working ok.

 

[07navi]

Is it possible that the cabin filter is plugged up? Seems like a long shot, but why else would it work before putting it inline with the intake and output?


Sent from my iPhone using Tapatalk

Do these have a cabin filter?

 

[Spiffyrides]

All,

Thanks for the ideas, turns out it was a weak blower motor. Though it tested fine on the bench, it wasn’t strong enough to work in airbox once installed. Since I could find no other issues, I bit the bullet and just bought a motor and it worked totally fine.

 

[rjdelp7]

Cabin filter, blend door...maybe

 

[07navi]

Cabin filter, blend door...maybe

Do these have cabin filters in them?

 

[Jon1985]

Had that problem with my 2010 barely blowing I dealt with it until it quit replaced it with an aftermarket blower only lasted two months sent it back got a refund bought a Motorcraft haven’t had a problem since been working great for a few Years now.

Honestly I just stick with Motorcraft / OEM parts now for all my vehicles never any luck with aftermarket unless that’s the only thing available Like the running board motor I had to replace .

 

[99WhiteC5Coupe]

Do these have cabin filters in them?

Refer to previous post #6.

 

[07navi]

Refer to previous post #6.

I don't think any of them have a cabin filter.

 

[Kevin Newcome]

Not sure how to start a new thread as I’m new to this forum, so here goes.

I have a ‘10 Expy EL Eddie Bauer with the climate control. That is the reason I posted on the end of this thread. My problem is that the blower motor in the front won’t work. I replaced the resistor a year ago, and my uncle who is an electronics guru tested it and said it is functioning correctly. I replaced the blower motor to no avail. I am wondering if I might’ve touched the ground & power wires together when I was replacing the resistor pigtail if I did, what would I have burnt? A fuse or inline disable link? If so, where do I look for it. I’ve checked all the fuses under the hood and in the passenger kick panel.

 

[rjdelp7]

When mine stopped working it was intermittent. I found bumping the motor, it would start running. I tested the voltage at the connector. It was like 8.5v on low, 10.2 on med and 12.2 on full. Check your voltage first.

 

[mjp2]

Not sure how to start a new thread as I’m new to this forum, so here goes.

I have a ‘10 Expy EL Eddie Bauer with the climate control. That is the reason I posted on the end of this thread. My problem is that the blower motor in the front won’t work. I replaced the resistor a year ago, and my uncle who is an electronics guru tested it and said it is functioning correctly. I replaced the blower motor to no avail. I am wondering if I might’ve touched the ground & power wires together when I was replacing the resistor pigtail if I did, what would I have burnt? A fuse or inline disable link? If so, where do I look for it. I’ve checked all the fuses under the hood and in the passenger kick panel.

Jiggle the blower motor connector and see if things start working, then unplug that connector and look for any burn marks. It's a common failure.

Splicing in Motorcraft part # WPT688 fixed things for me.

 

[Kevin Newcome]

I gotcha, but I have already replaced that connector (pigtail). I’m completely at a loss for why it won’t blow.

 

[mjp2]

ahh you're right. I read the resistor pigtail and didn't equate it to the blower motor connector. My bad.