Transmission Vibration

[The Butchers Pal]

Hi

My 2002 X5 has a vibration & associated noise when you apply light load to the engine in 4th or 5th between 1500 - 2500rpm.

If you continue to accelerate the box kicks down and the vibration clears instantly only to reappear when it changes up and gets to the above rev range.

Has anyone else come across this problem and if so what can be done?

Thanks

TBP

[Greydog]

Thinking through logically Drive and Propshaft speed will increase with road speed as will the gearbox internals so are you sure its gearbox?

The issue seems to be engine speed related so could it be water pump? alternator? or aircon compressor? or engine driven fan. These items will be affected by engine speed not road speed. They are also the simpler/cheaper to fix items.

The only other thing it could be is Torque converter that is engine speed driven but that is a box out fix so ££££'s I hope its the simpler things.

Just my thoughts