when i start my 840 it makes a whirring sound at low revs,but as i increase the revs it begins to disappear.it then comes back at lower revs.it does not seem to be effected by the steering.it gradually disappears the longer i drive.thanks.

chek PENTOSIN level

thanks, will give it a try

Mustang a Fastback? Tia!

green fastback. yes i do think i am steve mcqueen when i drive it.

Cool! If it's not the Pentosin causing the noise, Check both fans up front, Could be the clutch is seized or the electric fan staying on too long. They give a strange sound when not working correctly.

I had a noise in the front of my car a few weeks back and it turned out to be dry leaves in the front fan..Just a wild guess,but check for that..

Could it be the AC compressor?

switch under the bonnet was leaking power steering fluid,got it changed and now its perfect.thanks for the help.got my wipers fixed,1,700 euro.nasty...

...could also be the sound of the money-meter resetting itself...