1997 BMW 740 Grinding sound

1997 BMW 740
192,727 MILES • V8 • 2WD • AUTOMATIC
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LAUNCH10
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  • 5 POSTS
I have this grinding and vibration coming from what seems the Passenger side front tire or engine area. I comes at speeds above 40 mph and cruiseing(not on accel or deceleration). I can shift to Neutral when it sounds and it disappears, I can turn engine off and it disappears, if I weave from left and right-no change in sound. I can accelerate disappears. Take foot off gas pedal disappears.I know the brake pads and rotors are good. and rechecked twice with a torque wrench the torque on the wheel lug bolts. What is it?"
Dec 12, 2008 at 12:06 PM
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DOCHAGERTY
  • ✓ASE Certified Mechanic
  • 9,606 POSTS
  • ASE Certified Mechanic
Check for a collapsed motor mount(s)
Dec 12, 2008 at 1:45 PM
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LAUNCH10
  • MEMBER
  • 5 POSTS
Sorry, not that. I can duplicate it at around 40 mph and around 1000 to 1500 RPM. Seem to come from Inside the Trans.
Thanks, maybe next time
Dec 16, 2008 at 2:17 PM
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DOCHAGERTY
  • ✓ASE Certified Mechanic
  • 9,606 POSTS
  • ASE Certified Mechanic
Noises can be very difficult to send through cyberspace.
Dec 16, 2008 at 5:34 PM
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