Hi,

I have noticed a high-frequency whining sound in my 5.0 n/a XJ upon downshifting. Upon smooth acceleration, there is no such sound, neither when accelerating on neutral. I do not know what this is, but I have filled my tank with gas at a new gas station several days ago. I have also tried turning off the AC, but that did not help. See link below.


Any ideas? Thank you.

 

sounds like the transmission?

 

I had another drive yesterday after shooting that video and did not seem to hear the same sound...