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Old 14-04-2013
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Default Strange whining/resinating noise from WH Grand

Hi all,
I have a strange whining noise that comes from my WH when under load and mainly between 80 - 100 Kph.
I have only noticed it since having Stu's exhaust fitted.
It almost sounds like the tailshaft is out of balance, yet when it is making this noise, there is no vibration felt through the vehicle.
If you back off the pedal between 80 - 100 Kph and sit on a steady speed, you can't hear the noise.

Just wondering if anyone else out there has experienced this same sound?

Thanks in advance, Craig.

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Old 14-04-2013
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Front driveshaft.
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Old 14-04-2013
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Maybe the front diff bushes need replacing?
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Old 14-04-2013
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I think he may have done them already.

But my memory isnt great

Or Cv shaft starting to go.
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Old 14-04-2013
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Thanks for your advice so far.
I'll mention your thoughts to my mechanic.
Let you know how I go.

BTW: Vehicle has done 158,000 Klm's

Cheers, Craig
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Old 14-04-2013
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Ahh this is a easy one , first make sure the front left seat belt buckle is undone second open the left front door, and with two feet kick the mrs out. Problem solved. No more whining or resonating .

Try keep the speed to a slow crawl while doing this. Hahaha
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Old 14-04-2013
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I had whining noise coming from the rear at 80-100 km/h almost two years ago. It didn't happen while accelerating but when coasting at that speed on the freeway. Changed the rear diff fluid with redline, there was a bit of sludge, and noise was gone. I have also changed the diff fluid again a few weeks ago and there was no sludge whatsoever. It was just a precaution as it worries me sometimes with all those water crossings, can't help it .
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Old 15-04-2013
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Quote:
Originally Posted by briteway View Post
Changed the rear diff fluid with redline, there was a bit of sludge, and noise was gone.
Just had a full service last week and the diff oils were checked. The mechanic said that the oil was as clean as.
My Jeep (apart from latest service) has been serviced by the same Jeep dealship from where it was originaly purchased, as per the book.
BTW: It has never done any off roading.

Cheers, Craig
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Old 15-04-2013
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Acoustic noise maybe?
Do you still have the plastic transmission guard fitted?
I had a noise which ended up being the spare rim on the roof rack, only at certain speeds, had me baffled for a while.
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