AC/Dashboard making a knocking sound? - AcuraZine - Acura Enthusiast Community


AC/Dashboard making a knocking sound?


Old 08-01-2018, 10:30 PM
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AC/Dashboard making a knocking sound?

My 98 RL with 270k miles on it was making a weird noise coming from somewhere in the AC vents or maybe the dashboard/firewall. I drove about 25 minutes across town and when I got home I turned the car off and pulled my phone out to reply to a text. About 45 seconds after I took my key out of the ignition I started hearing a knocking noise from that area. I have a video on twitter that you can watch
with a decent sample of it. Again, car was off, no accessories were on except for the AC mode display on my dashboard, which I think is always on for some reason. Iíve never heard this noise before and want to figure out if itís an issue. By the time the noise started all of the fans/motors would have stopped rotating (I would think). If anyone has any ideas what it could be it would be much appreciated if you could share them. Thanks!

btw, I had the AC on 68 degrees Fahrenheit and the air temp outside was around 80 I think. AC was somewhere between medium and full blast. Including all details I can think of in case theyíre relevant. Thanks again.
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