What I hear is a rythmic squeak from the back of the car. The tune it
sings changes if the car is going down the road or turning. I have the
vaccum boosters working on the brakes. When I touch the brakes (ie. the
rear shoes start moving out) the noise goes away.
My Europa had an annoying "squeek" that I traced back to the coil rubbing
against the shock body. Sigh. I learned to live with it. Sometimes the
front disks would squeal some, Repco Metalmaster pads cured that problem.
If your rear drums are rubbing, I suppose that could squeal some too. You
might try pulling the drums and lightly sanding the shoes - enough to
break through any glaze to expose fresh shoe surface - it usually worked
with disk brake pads (which then usually glazed up again in 5K miles). Or
your bearings could be going, or the U-joints (although I think they tend
to "rumble" rather than squeal when about to die off), or a tire might be
rubbing against the body/other stuff (stock or oversize tires?), or the
alternator [bearings] might be going, or the water pump is about to bite
it off, or . . . Good Luck!
-RDH
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