Leaf in AC Blower Fan??

[Lrpilot]

I have a 2021 Longhorn. The AC fan blower has started making a noticeable humming noise that is worse on higher fan settings. I’m guessing a leaf or some other tree debris got in there since the truck was covered in tree droppings this week. How do I access the blower? Or, could I try and vacuum from the cabin filter area? Any suggestions? Thanks.

 

[Darksteel165]

Did you look at the cabin air filter area to start with?
A leaf shouldn't be able to get thorough the filter.
It's behind your bottom glovebox, there is a release with a cable on it that comes out, then you just pull the glovebox out.

 

[Lrpilot]

Did you look at the cabin air filter area to start with?
A leaf shouldn't be able to get thorough the filter.
It's behind your bottom glovebox, there is a release with a cable on it that comes out, then you just pull the glovebox out.

Yes. But the filter is downstream from the blower fan. Thats why I suspect there is something stuck in the blower fan blades.

 

[theblet]

You sure about that? The filter should be above the blower, hence before it

 

[Lrpilot]

You sure about that? The filter should be above the blower, hence before it

Correct. The filter is above the blower. But the blower blows the air up, thru the filter and then to the vents.

 

[smashweights]

Correct. The filter is above the blower. But the blower blows the air up, thru the filter and then to the vents.

Nope, it pulls through. That's why all the debris is on top of the filter away from the fan

 

[Darksteel165]

If the blower blew into the filter that would mean all the junk would go through the blower before the filter making the filter pointless.

 

[Lrpilot]

Nope, it pulls through. That's why all the debris is on top of the filter away from the fan

Well damn! You’re right. Just took another look and it flows from the top of the filter down towards the fan and then to the vents. Now I’m wondering if the debris caught in the filter pleats could be vibrating and making the humming noise? I found some round seed stuck in there. Could that cause a humming noise as the fan speed increases?

 

[Darksteel165]

Well damn! You’re right. Just took another look and it flows from the top of the filter down towards the fan and then to the vents. Now I’m wondering if the debris caught in the filter pleats could be vibrating and making the humming noise? I found some round seed stuck in there. Could that cause a humming noise as the fan speed increases?

Just take the filter out and turn it on, you can run the system with your glovebox open

 

[raygun9]

Its probably a mouse, dead obviously, just pop the blower fan off and dump it out. Its held in by 3 screws and there is an electrical push connector. Pretty straightforward, I looked for some youtube links to share but only see them for gen4s and older but its the same concept.

Sent from my SM-G781U1 using Tapatalk

 

[theblet]

Nope, it pulls through. That's why all the debris is on top of the filter away from the fan

Yup