Miata Mailing List: July 1994, Message #123
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   From: reb@xyzzy.com (Phydeaux)
Subject: RE: A/C Noise
   Date: Wed, 6 Jul 1994 22:29:13 -0400

>> I have a some questions regarding noises. First, should the air conditioner
>> make any kind of noise when its first turned on. When I turn mine on and
>> the magnetic clutch engages it makes a loud noise like someone is shaking
>> a can of ballbearings. Is this normal? It eventually dies down, but not
>> completely.Second, Another noise which I hear constantly comes from the

>I have the same noise from my A/C.  It seems to be much worse when the 
>car is HOT.  A very loud rattling from engine compartment when the car 
>has run for a good while, then shut off, then started back up.  When the 
>A/C is punched on, a loud rattling (like the ball bearings you mention).
>It eventually quiets down.

Gee -- I haven't noticed this in our Miata, but my '84 GM piece of
junk does this whenever the A/C compressor kicks in.  My guess is that
it's the A/C compressor you are hearing.
						reb
						'94 M