My 89 SC has started making this loud squealing noise. It does not seem to be rpm related so I am not convinced that it is the supercharger, water pump, belts or anything engine related. But it does only occur after driving a mile or so and while moving which means that everything is about at normal operating temps. I have only tried removing the main accessory belt so far but that doesn't seem to make much difference, especially since I can't get it to make the noise when the car is not moving and I don't want to drive it without the belt. I can't cause the noise by braking or turning. It just comes and goes at any speed. It doesn't seem to matter if I am accelerating or coasting. It's just a loud, intermittent squealing noise. The only thing I have done to the car recently was replace all four shocks. I suppose I could try to retorque the front wheel lug nuts but I was pretty careful when tightening them. Has anyone experienced this or have any ideas?
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