Outer Limits 4x4 Board

Just bought a GU Patrol on the weekend. I started to notice that when i am in a stand still position and take off to the right or left i will hear a rumbling noise and feel some vibrations as if i were losing traction on the back tyres. Not the case as ive looked and the tyres spin fine. If i take off in a straight line the vibrations are not present.

Could the be a problem with the rear diff?

we have the same problem in our GU, it is actually comming fromthe LSD, we spoke to a diff place about it, but i cant actually remember what the story was, it has been a while,

our started doing it after we submersed it in a large puddle,

all we do now, when we change diff oil, is to add a LSD additive, and its fine.

yepchange the oil it shoud be fine

LSD rumble. Not a prob, shows its working. Using new LSD oil or additive will reduce it.
I would live with it if oil clean.

LSD works better this way as not as much slip.

Bazzle

thanks for the tips guys.
This only just adds to my concern that this vehicle has been drowned before.
There is water int he dummy lights, some water damage under the mats, which i pulled out and steam cleaned. bottom of the front seats are rusted. I have polished them off and sprayed them with a galvinising paint

But the dealer told me that they noticed some water in the diff, but they drained it and put some oil in it. I may take it back and get them to do it again.

Also is it common for a patch of oil to be around the drain hole in the diff?

X-R-Cist wrote:Also is it common for a patch of oil to be around the drain hole in the diff?

when you fill a diff, you fill it until it comes out that hole.

I would drain it yourself, its only the large bolt thing under the pumpkin.. then fill it thru the back of diff..

Im thinkin the wheel bearings maybe fubar, or someother bearings. It depends on how much water was in the diff, and for how long.

How long and how deep was it flooded for!?

I second all those opinions.
Mine does the same. I have just put in a new LSD hemisphere that came out of a friends GQ when he put an air locker in.
A mechanic friend of mine told me that the rumble was caused by the friction plates in the LSD not sliding smoothly across each other - they are actually gripping and then jerking apart continuously.
It didn't happen when I first put it, but recently it has started to rumble. Maybe the oil got destroyed more quickly....
My friend also suggested to change the oil or to add a friction modifier to the oil.

bogged wrote:

X-R-Cist wrote:Also is it common for a patch of oil to be around the drain hole in the diff?

when you fill a diff, you fill it until it comes out that hole.

I would drain it yourself, its only the large bolt thing under the pumpkin.. then fill it thru the back of diff..

Im thinkin the wheel bearings maybe fubar, or someother bearings. It depends on how much water was in the diff, and for how long.

How long and how deep was it flooded for!?

I dont know how long it was flooded or how deep, but its gotta be pretty bad considering there is water in the fake lights at the back.

But i will take your advice and drain it myself. Cant trust this dealer any more than i can spit

thanks for all the help guys

You will need a 1/2 inch drive ratchet/breaker bar to undo the bolt.
There will be about 2 litres in there...

X-R-Cist wrote:I dont know how long it was flooded or how deep, but its gotta be pretty bad considering there is water in the fake lights at the back.

so you bought it drowned,
how much did you save on a clean one?

i didnt know it was drowned until after i bought it.

But i rekon i got it cheap. 28K, 2" suspension lift, new set of BFgoodrich AT and a snorkle fitted.
70,000K on the clock, full tank of diesel (yes im a tight ass )

The upholstery wasnt damaged at all, altho i ripped the carpet out and found some kind of oily substance on the passanger side floor. I tried to clean it up, but it has eaten through the hear insulator that is stuck onto the chassis by the manufacturer.

im just going to clean it up as best i can and put the carpet back.

Nothing i can do with the dealer, as the contract says purchase made as per customers inspection.

i would talk to dept of fair trading.If they sold it to you and they knew it was drowned,that could be considered misinformation.I would check and see what they can do for you.
P.S. I am sik of bad customer service and we shouldnt have to put up with it cause some tight ass wants to make an extra $1.50 at my expense

It doesnt take mush to get water under carpets or in tail lights. Doesn't mean it was "Drowned".
One deep river can do that.
Water will be forced in thru sill drains up to A anb B piller holes, around gear stick boots.
Dry out what you can, change what oils you can.
Remove freewheeling hub and inspect grease for brown color or water.
Repack bearings if contaminated.

Enjoy. Ive had lots of fresh water thru my Nissans with no real probs other than extra maint req.

Bazzle

My LSD used to do exactly the same thing. I put Penrite Limslip (think it was 90/140) in after draining the old oil and it fixed it. But I suspect now the LSD isnt is tight as it was due to the additive in the oil reducing the friction between the plates. (The rear wheels dont tear up the grass anymore when I turn around on the lawn)

The Penrite oil comes in 2.5 liter containers which is enough for a complete change and a bit left over for top ups.

good luck with the department of fair trade, it was brought on customer inspection. if you are not prepaired to live with consiquences of buying your own car or arent confident inspecting a car, get a pre purchase inspection done, your mechanic if ya trust him enuf or RACV do such tests. the advantage of RACV and the likes of is if they miss the fact that you car has been drowned the are lyable to fix the problem or if unrepairable buy/replace the vehicle for you. its the're problem if they neglected to tell you its a piece of crap.

i agree with bazzle bit of water here and there doesnt mean that is been drowned, just give it a good going over new oils all round etc. and if you are keen pull the interior out. if it has been drowned it should have a tide mark on it.