Transmission noise?

I cant figure out what this noise is i accelerate to 40 mph then let off the gas and around 35 mph it happens for a couple seconds only happens when the car is in gear sounds like it could be front diff or input shaft bearing i could use some help!!!!!

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Transmission whining/grinding noise on a 97 740iL
UPDATE: Resolved the issue in June 2012 by performing a transmission fluid change, replacing the Febi filter the shop installed with a Genuine BMW Filtran filter. No noises at all in the last two months. Whining noise my 740iL makes when accelerating with a cold engine. Check this link on BimmerBoard with the correct fill procedure: http://bimmerboard.com/members/brian/original/ZF%205HP30%20Oil%20Change.pdf





Hyundai Elantra transmission problem
This is a follow up to my other video http://youtu.be/oXk2gtHmuiY Pulled into my garage and car is stuck in Drive. No gear is registered in the gauges. I can shift between Drive and Neutral but there's a loud pop each time. The shifter is physically locked out of going into Reverse or Park.





How A CVT Works by TEAM Industries.mov
TEAM has received a lot of requests to explain how a CVT works, here is a good video showing the basics of CVT. In the future we will be posting more videos explaining some of our innovations to the basic design. Take a look and let us know what you think.





HOW IT WORKS: Vehicle Transmission (720p)
This educational film demonstrates the mechanical functioning of the which improves efficiency by employing gears.




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