If you are losing power the belt theory doesn't seem to add up, but another
test for the belt is that if you sprinkle baby powder on the belt as it is
squealing it should quiet it almost immediately. This is a temporary fix
but it might help narrow down the possible causes. IMO it is most probable
that the alt, or some other driven accessory is trying to seize (air pumps
have a tendency to do this). Short of that I would be afraid that it is a
bearing getting starved inside the engine.
james
----- Original Message -----
From: Joe Short <buster_balz@operamail.com>
To: <ct@cthompson.com>; <mgs@autox.team.net>
Sent: 14 March, 2002 1:56 PM
Subject: Re: banshees under the hood
> If it was the belt to begin with, it may have been damaged. The belt could
have had smooth spots burned into it. If so the belt will need to be
replaced.
> You can check the belt visually. Look at the surface of the belt that
contacts the pulleys. If it is undamaged, it should have an even, flat no
gloss color. If it is damaged, it will have some glossy spots on it, or it
may be completely glossed. Be aware that this test is purely subjective, and
as such ir prone to some degree of inaccuracey. IMHO,It would be prudent to
just proced with replacing the belt in question.
>
>
> Joe
>
> <BR>
> <BR>
> ----- Original Message -----<BR>
> From: Chris Thompson <ct@cthompson.com><BR>
> Date: Thu, 14 Mar 2002 15:09:37 -0500<BR>
> To: "mgs@autox.team.net" <mgs@autox.team.net><BR>
> Subject: Re: banshees under the hood<BR>
> <BR>
> <BR>
> Content-Disposition: inline<BR>
> <BR>
> > My first thought was a slipping belt to the alternator. I've had
several<BR>
> > cars that, when belts begin to slip, emit a loud squeal. A slowing<BR>
> > alternator might cause your dimming lights.<BR>
> > <BR>
> > -C<BR>
> > <BR>
> > On Thu, 14 Mar 2002, Aubrey Schneider wrote:<BR>
> > > Last year I did an engine rebuild on my '75B. All parts replaced,
as<BR>
> > > well as the oil pump.<BR>
> > > Within 3 months a terrible shreeking sound started coming from the
motor<BR>
> > > but only when it was cold. As the car warmed up, the noise would<BR>
> > > disappear.<BR>
> > > I re-tightened all belts, replaced some, used lubricants where<BR>
> > > appropriate & the noise disappeared for 8 days. It started again & I
am<BR>
> > > unable to pinpoint the reason.<BR>
> > > Some symptoms are:<BR>
> > > At night headlights dim<BR>
> > > Loss of power when the noise is audible & an increase when noise<BR>
> > > disappears.<BR>
> > > I have checked manuals, spoken with experts & have had numerous<BR>
> > > suggestions thrown at me, none of which work.<BR>
> > <BR>
> > -- <BR>
> > _______________<BR>
> > Chris Thompson<BR>
>
> --
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