Honda Car Forum

I have a 2003 CRV with about 40K miles on it. Recently it started to make a
loud vibrating noise only when the air is on. When I look under the hood
there is no indication that a belt is worn. Any ideas?

fishsticks wrote:
>
> I have a 2003 CRV with about 40K miles on it. Recently it started to make a
> loud vibrating noise only when the air is on. When I look under the hood
> there is no indication that a belt is worn. Any ideas?

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Since the AC rad fan only runs when the AC is running, check the fan
blades (carefully) to see if it's a balance problem (dirty or missing
blade), or the upper rubber mounts on the rad may be loose. If you ever
use a pressure washer on the rad, don't get too close, you'll bend the
cooling fins.

YOu could unplug the fan temporarily to be sure if it's the AC
compressor making the (seizing) noise. :-(

'Curly'