Date: Sun, 4 Jul 1999 16:11:03 -0300
From: "Jack" <>
Subject: saab 900

I've got a 89 Saab 900. When I turn the AC or heater fan on I get a knocking sound. However if I put the AC on full force..its not there. Anybody have any ideas why? leaves or another type of blockage maybe?? Thanks..

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