I have a 2001 Hyundai Trajet 2.0 Auto.
When driving below 20mph all is quiet. Go above and a strange whine/vibration from the floor is heard. It gets louder upto about 50mph, then goes quiet. Carry on speeding up and it comes back louder then quiet again at 70mph.
I have changed the transmission fluid but no difference. The noise is still there.
I thought bearings, but that would make noise at slow speed too, just to be certain, I jacked up the front of the car so the wheels are off the floor and stated her up. The noise was still there. So not bearings. Any suggestions.
Paul.