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I bought my 2002 3.0l DT 4 weeks ago, 250000KLMS. Now It has just started emitting a high pitch whine when I hit 95 klm hr. , this noise seems to be coming from front RH .It stops as soon as I take foot of accelerator and starts again as soon as I put it on again. Is this a sign my diff is on the way out , or what else could it be ? hopefully something less expensive??? your thoughts please...
Maybe Egr pipe leaking , Does it sound like exhaust leak , don't think its your diff
Loose belt, Have a look under the bonnet see if all looks right, Can you replicate the sound standing still
Drop the diff oil and look for bits of metal in it and on the plug
When my diff went it was more of a low pitch droning sound that left when under power and was more noticeable coasting than cruising
What made you think it was your Diff????
it wouldn't be from your front diff unless your hubs are locked in constantly but i still dont think it would whine as its not under load i reackon its your thrust bearing or maybe a uni joint
im a bit deaf (a lot being a boilermaker) so not 100% sure where sound is emanating from defiantly a high pitch whine. Realise now it shouldn't be front diff but somats not quite right .Thought it was diff due to the noise stopping as soon as I took foot of accelerator and coming back when I put it on again. Gonna get a mechanic to give it a full service and check all out.Was told it had been given a full service before buying it ....but for pice of mind I think I should....any good 4x4 mechanics in Redlands qld ?
http://www.nissanpatrol.com.au/forum...vicing-in-bris..
Scotty(bigrig) recommends autoart but its a bit out of my way but prity local for you
do stuffed uni's whine ???Quote:
Originally Posted by 93patrol
More have a squeak that is high pitched and annoying. It sounds like your brakes are stuck on slightly
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Uni's hum , I'm not convinced its a diff
could even be a bearing in your belt tensioner
Be interested in the out come, hope not too painfull
I take it you brought private,??
Thanks for all the advice, Thought it may be brakes or brake dust ,but I've discounted that now , Think I may have not fully disengaged 4 wheel drive auto lock, had a bit of a play , and on the few times I managed to get a clear run to get up to 95 klm I couldn't hear the whine ( though I am a bit deaf!). will get it checked out for sure auto art sounds good thanks MT .Think it may be a case of me being new to the 4 x 4 world and the Patrol. Hope so , it wil be cheaper than a new diff!! I will let you know the outcome . Thanks again.
Had another look under Patrol as whine is still there at 100 klms, I can only turn the front prop 1/4 turn by hand , does this mean it is locked in ?
Jack your front wheels of the ground and then try turning your prop shaft discount your hubs first as it cheaper than your transfer case to rebuild.
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At least you had a crack yourself. sometimes these noises can be bloody hard to find, specially when they are high speed noises.