Yesterday after a 100 mile drive, I started the car up and the air conditioner made a loud clicking or knocking noise. It would stop when I turned off the
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06-09-2012, 06:29 PM | #1 (permalink) |
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Air conditioning knocking noise
Yesterday after a 100 mile drive, I started the car up and the air conditioner made a loud clicking or knocking noise. It would stop when I turned off the AC. It was not speed or fan related. Weird. Finally it stopped after I turned the AC on and off about 10 times. Has this ever happened to anyone?
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09-23-2012, 11:15 AM | #3 (permalink) |
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I'm having this EXACT same problem. I did change my air cabin filter a few weeks ago with a non-nissan filter but it was very non-eventfull until now. When i turn on the fan I don't have the problem. As soon as I turn on the AC, it starts making the clunking/knocking noise in the glove box area. Should I bring the car to the dealer for warranty repair. I can't understand how the cabin filter could cause this since the fan running full speed has no issues.
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08-17-2020, 02:12 PM | #4 (permalink) |
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I know this thread is 8 years old, but I've developed exactly the same problem with my 2016 car.
When the air conditioning is on 'recirculate' I get a loud knocking noise coming from inside the centre of the dashboard. It seems to be a fan hitting something. When I turn 'recirculate' off, the noise stops. Could a fan be hitting some kind of flap? Did anyone find out what causes this knocking noise?
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08-17-2020, 04:52 PM | #5 (permalink) |
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I think I remember reading about there being some kind of sealant/gasket material that could come loose and cause a knocking sound inside the ductwork. Not much to go on but maybe it will help narrow your search.
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08-18-2020, 04:15 AM | #6 (permalink) | |
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Anybody else have any thoughts on the problem? https://www.youtube.com/watch?v=e2R315YoS1k
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08-18-2020, 10:39 AM | #7 (permalink) | |
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08-19-2020, 08:52 AM | #10 (permalink) | |
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The FSM should have the R&R procedures. That will give you some idea of how difficult the job is. Link in my sig.
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09-14-2020, 04:55 AM | #11 (permalink) |
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Fixed it!
Last night I removed the glove box and its surrounds (7 screws - easy job if you've got a very long screwdriver), then took the cabin air filter out. I reckon the most likely cause was the air filter becoming dislodged a bit (it can move around inside a housing that seems way too big) and stopping the a/c cowling from moving to its 'shut' position properly. The cabin air filter was a bit squashed on the left hand side. Anyhow, the noise has stopped and I don't have to pay a mechanic a hundred pounds (UK) for something that took 15 minutes to sort out! edit: sorry, I should have credited beachguard for giving me the idea. Thanks mate. ...oh, I took the precaution of turning the air filter 180 degrees before replacing it.
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. '03 Grey >>> '06 Black >>>'10 Silver >>> '16 Grey ^ Last edited by chubbs; 09-14-2020 at 02:47 PM. |
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