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My past posts talk about a humming noise that occurs at certain rpms. Well I tried the trans flush and it worked for a little while and the noise came back. I also had the front and rear differential fluids changed and the noise is still there. Non of the shops can figure where and why the humming noise is there. The noise doesn't get worse with speed. But when I drive in manual mode the car doesn't hum. Can this be an indication of the trans slipping?

When I drove up a 45 degree hill yesterday on automatic mode the car was at a steady 25 mph and started humming bad, and I barely made it up the hill. The rpm wouldn't move either. Maybe I need to take it to a transmission shop and not a LR specialist.
 

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2002-2005 Range Rover MkIII / L322
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blkblkrover said:
My past posts talk about a humming noise that occurs at certain rpms. Well I tried the trans flush and it worked for a little while and the noise came back. I also had the front and rear differential fluids changed and the noise is still there. Non of the shops can figure where and why the humming noise is there. The noise doesn't get worse with speed. But when I drive in manual mode the car doesn't hum. Can this be an indication of the trans slipping?

When I drove up a 45 degree hill yesterday on automatic mode the car was at a steady 25 mph and started humming bad, and I barely made it up the hill. The rpm wouldn't move either. Maybe I need to take it to a transmission shop and not a LR specialist.
You would think your LR specialist (indy?) would be able to figure out the problem. Is the hill semi-close to you? If so, have the tech test drive it with you (as I would expect you to easily duplicate the problem on the same hill). You might also try the LR dealer do look at it.
 
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