A/C fan chirping, but only at low fan speed
#1
Burning Brakes
Thread Starter
A/C fan chirping, but only at low fan speed
Just starting making the noise a couple days ago. I popped out the cabin air filter and felt around for any loose debris at the fan blades that might be causing the noise, but I didn't find any.
Then I started manually changing the fan speed just to make sure. Yep, chirps like a canary at 2 bars, silences totally when it's running faster.
My guess is that the bearings are going on the fan motor. Car has about 93k on the clock. I'm less than 6 months out of warranty, alas (which is why the light bulb behind the defroster buttons just blew out, too. But I digress).
Sound right to you? And if so, is this part shared with any Hondas so I don't get soaked on the replacement part?
Then I started manually changing the fan speed just to make sure. Yep, chirps like a canary at 2 bars, silences totally when it's running faster.
My guess is that the bearings are going on the fan motor. Car has about 93k on the clock. I'm less than 6 months out of warranty, alas (which is why the light bulb behind the defroster buttons just blew out, too. But I digress).
Sound right to you? And if so, is this part shared with any Hondas so I don't get soaked on the replacement part?
#2
Senior Moderator
Can you explain the chirp? Do you ever park under a tree? Leaves can do strange things if they can get past the filter.
#3
Burning Brakes
Thread Starter
Nope, 007, I don't think that's it.
It's a high-pitched, rhythmic (though syncopated, every second or two) noise that you'd expect from failing lubrication or bearings.
The leaves, sticks, etc., possibility was why I took out the filter and went fishing with my hand (which is just big enough to get the back of it gouged up on all those sharp plastic edges -- ouch!). I've had noises before that were for that reason, which is why I was confident that was probably the problem. But it felt clean as a whistle.
It's a high-pitched, rhythmic (though syncopated, every second or two) noise that you'd expect from failing lubrication or bearings.
The leaves, sticks, etc., possibility was why I took out the filter and went fishing with my hand (which is just big enough to get the back of it gouged up on all those sharp plastic edges -- ouch!). I've had noises before that were for that reason, which is why I was confident that was probably the problem. But it felt clean as a whistle.
#4
Senior Moderator
What are the chances of getting to the motor and blasting a can of WD-40 in it?
#7
Just starting making the noise a couple days ago. I popped out the cabin air filter and felt around for any loose debris at the fan blades that might be causing the noise, but I didn't find any.
Then I started manually changing the fan speed just to make sure. Yep, chirps like a canary at 2 bars, silences totally when it's running faster.
My guess is that the bearings are going on the fan motor. Car has about 93k on the clock. I'm less than 6 months out of warranty, alas (which is why the light bulb behind the defroster buttons just blew out, too. But I digress).
Sound right to you? And if so, is this part shared with any Hondas so I don't get soaked on the replacement part?
Then I started manually changing the fan speed just to make sure. Yep, chirps like a canary at 2 bars, silences totally when it's running faster.
My guess is that the bearings are going on the fan motor. Car has about 93k on the clock. I'm less than 6 months out of warranty, alas (which is why the light bulb behind the defroster buttons just blew out, too. But I digress).
Sound right to you? And if so, is this part shared with any Hondas so I don't get soaked on the replacement part?
Last edited by GASKICKER; 01-02-2015 at 05:37 PM.
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#8
Burning Brakes
Thread Starter
I saved a bit of coin by ordering it from one of the Acura dealers that sells parts online. Then, having even less time and talent than money, I had my local independent mechanic put it in.
#9
IMO, this is a part where it would be very easy for a third-party supplier to make a fan that looks and reads identically to the original, but doesn't perform or endure quite as well. I didn't want to listen to second-rate merchandise droning or do this job again, so I grabbed my ankles for the Acura replacement fan. It's visibly nearly identical to the fan for some Honda models (notably one for some vintage of Civic -- I forget which), but the shape of the enclosure edge was just different enough in the diagrams that I lacked confidence the Honda part would fit.
I saved a bit of coin by ordering it from one of the Acura dealers that sells parts online. Then, having even less time and talent than money, I had my local independent mechanic put it in.
I saved a bit of coin by ordering it from one of the Acura dealers that sells parts online. Then, having even less time and talent than money, I had my local independent mechanic put it in.
Last edited by GASKICKER; 01-02-2015 at 10:39 PM.
#11
I am also getting a chirping sound at low speed but not at idle. I ordered new drive belt tensioner and idler pulley, while also rebuilding the power steering pump with new seals, but was wondering if the chirping noise might be from the fan. Do you have the part number?
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