A noise that goes away when you steer to the right or left can be caused by a defective wheel bearing. Blub Blub doesn't sound like a wheel bearing though. It is normally more like a low pitched moan. As dbird says, it could be a tire. Is the frequency of the 'blub' about once per tire revolution? Does the frequency change as you increase speed?

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