Whine noise

[David B]

Hi all,

Is a dull whine noise when decelerating ( coasting) normal for the Grenadier ( diesel)?
I only notice it if I’m driving over 70k’s per hour and it goes away as soon as I touch the accelerator.

Cheers

 

[Mick]

Hi all,

Is a dull whine noise when decelerating ( coasting) normal for the Grenadier ( diesel)?
I only notice it if I’m driving over 70k’s per hour and it goes away as soon as I touch the accelerator.

Cheers

I have a similar issue starts around 60 but under acceleration and deceleration

 

[Tinerfeño]

If you can't say if it comes from front or rear (in case it is final drive) I would think it is the transfer box. I assume ther is a two-stage gearing for output shafts and this may cause some noise. If you still are at low mileage I would follow it for a while as things are still running-in. But if it continues (and in wors case increases) I would at least register a case for later guarantee work.

 

[David B]

If you can't say if it comes from front or rear (in case it is final drive) I would think it is the transfer box. I assume ther is a two-stage gearing for output shafts and this may cause some noise. If you still are at low mileage I would follow it for a while as things are still running-in. But if it continues (and in wors case increases) I would at least register a case for later guarantee work.

On about 20000 k’s , so should be all run in. Will monitor closely, I believe it’s always done it, but usually have the radio on.

 

[David B]

I have a similar issue starts around 60 but under acceleration and deceleration

Ok, has it always done it?

 

[Skydance]

There should be no whining, only the normal hum. But crawl underneath and check anything which maybe rubbing against the drive shaft. Bowden/transfer box cable with a metal conduit casing maybe rubbing which was a common issue in the past.

 

[landmannnn]

The transfer box is gear driven as opposed to chain driven in most 4x4s. Gear driven transfer boxes do whine a little, most noticeably on the overrun.

 

[Bruce B]

Hi all,

Is a dull whine noise when decelerating ( coasting) normal for the Grenadier ( diesel)?
I only notice it if I’m driving over 70k’s per hour and it goes away as soon as I touch the accelerator.

Cheers

I drove an early production Grenadier for about 300 miles and it had a definite “whine” from the transfer case. As the newer vehicles I drove did not exhibit the same noise, I asked about it and was told that there had been a revision to the transfer case on later production models. I can’t offer when the revision happened though.

 

[David B]

The transfer box is gear driven as opposed to chain driven in most 4x4s. Gear driven transfer boxes do whine a little, most noticeably on the overrun.

What do you mean by the overrun mate?

 

[landmannnn]

What do you mean by the overrun mate?

When you back off the throttle pedal.

 

[Tom109]

I have a lot of whine on overrun from the t-case. Also have the clunking on downshift to 2nd gear, so I’m wondering if it’s shimmed properly. It’s on my dealer list for later this year.