High pitch squeal even after turning the car off. Actually 1997 import

Hello, I don't know of anything that would still be running while the engine is off, except for perhaps an electric cooling fan. The most important thing with any concern - especially a noise - is to duplicate the concern during a hands on inspection. Once observed it should be relatively easy for a professional to determine the source of the noise. Use this link to find some shops near you that can help with your concern: www.repairpal.com/repair-shops