Site News - 1/26 Vintage Saab Club of North America Magazine Feature
Date: Thu, 14 Dec 2006 23:17:11 +1100
From: Peter Oates <>
Subject: Re: Terrible Screaming Noise

Paul Halliday wrote: > in article, > at wrote on 29/11/2006 > 00:07: > >> yaofeng wrote: >>> I used to have a 89 900S doing the same thing. It happened only in >>> cold mornings. A good wake up call for the neighbors. >> So just drive it some and see how it goes perhaps? > > If it stops after, say, 100 yards or less, it's most likely just some damp > that's got under the alternator belt. > > On our C900s (1987 and 1989), the alternator belt can be tightened by simply > tightening the nut on the swing arm. Locate the brake booster on the LHS of > the engine bay, by the firewall. Look at the belt just next to it, but > further towards the middle of the car. That's the one ... See the long > thread and the nut? Just tighten that one a little. > > Better still, slacken it off, buy a new alternator belt and tighten it up, > so that there is only 0.5cm "give" in the belt when pressed. > > HTH, good luck guys ... Come back if that's not the issue. > > Paul > > 1989 900 Turbo S > >

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