The Mitsubishi Pajero Owners Club®

Sean D · Posted: Tue Feb 07, 2012 16:32 Post subject: Annoying whine

Not sure where its coming from but seems to start at about 45mph and gets higher pitch the faster I go, it seems to dissapear about 65 but that might be it just gets to high and is inaudible, if I back off the throttle it stops immediately, any idea's guys

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elv · Posted: Tue Feb 07, 2012 16:35 Post subject:

Wheel bearing? Confused

Sean D · Posted: Tue Feb 07, 2012 16:39 Post subject:

HandyDan · Posted: Tue Feb 07, 2012 17:20 Post subject:

Beaujolais Nouveau Question

Sean D · Posted: Tue Feb 07, 2012 18:25 Post subject:

BIG RED · Posted: Tue Feb 07, 2012 18:26 Post subject:

i got one of them in mine (starts when she gets in and stops when she gets out) Laughing

87GTA · Posted: Tue Feb 07, 2012 19:23 Post subject:

87GTA · Posted: Tue Feb 07, 2012 19:25 Post subject:

Just noticed its a shogun so not LSD Rolling Eyes

Oil Change, maybe see what additives are available.

Do you use it off road?? Maybe water/*beep* got in through the breather

tom fenton · Posted: Tue Feb 07, 2012 20:13 Post subject:

How many miles has it done?

My Shogun has just clicked over 200k, it has a whine from the rear diff above about 60mph. I changed the oil which didn't really make much difference. I have just put it down to wear and age. It isn't horrendous and I can certainly live with it.

Shmaides · Posted: Tue Feb 07, 2012 23:41 Post subject:

If its more of a drone than a wine it may will be the prop shaft... loose U/Js, happened on mine. Although this may cause a clicking noise and vibration aswell... but always something to check and very easy to do so Smile

Sean D · Posted: Wed Feb 08, 2012 12:06 Post subject:

Thanks for the replies guys, Its just clocked 140k, I wasn'y aware the if its a Shogun it will not have a LSD, is the definate, saves me getting under the car to find out Wink

tom fenton · Posted: Wed Feb 08, 2012 12:30 Post subject:

Has it got a rear diff lock switch on the centre console? If so definitely no LSD.

Sean D · Posted: Wed Feb 08, 2012 18:44 Post subject:

Indirunner · Posted: Mon Apr 02, 2012 13:28 Post subject: rear diff whine

I have a Pajero 2.8 TD, clocked 52K with the same problem. In my case the whining starts during acceleration at 60kmph onwards. This whine dissapears or is rendered inaudible by engine noise at 150kmph. The whine almost dissapears immediately at letting off the accelerator. When it coasts, it doesnt whine. Nor does it whine when the car is put in neutral at higher speed. Comes down to the whine being road speed dependent, rather than engine speed dependent. Therefore, the tyre and the engine are out. even the shaft and UJ is out since the whine comes on only during acceleration.

It was subsequenty established at the workshop that the rear differential was the culprit and the gears therein were the cause of this whine. There was less than perfect setup of the ring and pinion gears which allowed the teeth of both the gears come aggressivel in contact with each other during acceleration at a given speed that in turn caused both gears to wear each other out. In main cases, a crush sleeve failure, ot a bearing failure inside the diff causes this whine. This has a cascading effect on the whole drivetrain and eventally leads to eithe the differential or drivetrain failure. Depending upon the extent of the whine, which may turn to a growl in case of a fast deteriorating diff , we may opt to repair it, or replace it with a new differential.

I have opted to replace it, because I dont want to take the chance of partially replacement of failed gears because as far as I know, nothing beats a factory set differential.

Hope this helps.

kevin18050 · Posted: Mon Apr 02, 2012 19:38 Post subject:

deffo diff if backing off quietens it