Odd whistle/ whine

buller_scott · 29th June 2010, 12:05 PM

hey guys, how are you going?

i've been trolling the forums for a few months so far, lots of good info to be had.

i've just done a search, and for the love of me, i couldnt find my situation with the search terms that i was using. so here goes:

car: 1995 build disco 3.9L V8 auto
mileage: ~230,500km's
mods: none, all OEM parts replaced
upkeep: just had a 230,000km service

issue: no driveability issues, vehicle starts fine, accelerates as-per-usual , etc etc, but there has been an unusual whine/ vacuum cleaner sound develop. tonight, for the very first time since i've driven the car [had it in the family since new], there was a high pitched, but rather subtle whistle/ whine/ vacuum cleaner sound, that made itself apparent upon cold start up, disappeared when loaded, but then repeated itself during idle/ deceleration when in "D".

my old man reckons it's not mechanical, and from what i've read here the closest thing that it could be might be the transfer cover, but im not sure if im even in the right ball park with this one. the sound seems to be coming from under the passenger cabin.

sorry if my post was vague, but thanks for taking the time to read over it, and any help would be appreciated- just want to keep the old girl going as smoothly as possible, forever

cheers,

scotty

Discovery-94 · 29th June 2010, 02:52 PM

hello there!

Well yes, it is all a little bit vague, but its always difficult to explain strange noises...

Since you describe it as a "whining noise" coming from "under the passenger cabin" my first guess would be drive shaft (maybe uni joint is going) or diff problems

First I would say find out whether the noise increases/decreases or changes at all with revs or speed and whether it behaves the same in Drive or Neutral, and we go from there...

As for the Transfer Cover.. if you're concerned that it is loose... just jump under the car and check all bolts/nuts?