I have a 1994 BMW 740i. A weird noise began yesterday, and I am very concerned about it. The nearest that I can describe it is akin to a grinder running but nothing against it, or maybe a wetstone wheel spinning. When I accelerate or even increase the throttle in park, the noise increases, and dies back down to a slow spinning when I idle down. When I approach 50mph, the noise suddenly stops and the Traction Control? light - in between speedometer and tachometer, triangle with exclamation point inside and a circular arrow surrounding - comes on. What could this be? Is the vehicle safe to operate until I can get it in for repair or is it something vital


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1994 BMW 740i
mfd 11/93 740iA
Engine Family RBM 4.0VJGAEA
Engine Displacement 3982 cu. cm.
2nd owner - well maintained, almost mint cond. 145998 miles.
Only previous problems: Dry-rotted coolant hoses, front alignment, ran out of fuel once. Previous problems fixed. Check Engine light has been lit since fuel ran out. Haven't reset yet.