I had a front left bearing go out. It caused a steady hum when I drove straight ahead, and when I steered to one side, but not when I steered in the other direction.

95 Contour Zetec, ATX (wrecked, sitting in the barn) 95 Mystique Zetec, MTX 2000 Taurus SEL 3.0L Duratec 1994 Crown Victoria LX 4.6 V8 1993 Chevy Silverado 4.3 V6