What makes the whine noise?

[ecohen2]

My Grenadier drivetrain makes a loud whine noise when I am cruising along at a constant speed. If it is not under load the noise stops... I think they all do this, I am curious is it the differentials, drive shafts or the transmission that I hear making the noise?

Being the engineering geek that I am, I want to try to reduce the noise..

 

[Lars]

Mine whines like crazy at about 2000RPM. @pmatusov reported a dramatic decrease in general noise after some sound deadening mat was applied.

https://www.theineosforum.com/threa...your-grenadier-today.12411127/post-1333344707

 

[Clark Kent]

https://www.nhtsa.gov/?nhtsaId=11022191

Assuming your vehicle is assessed as within the range of normal, if you find the whine offensive you could add more sound deadening material inside the cabin.

 

[Shopkeep]

My Grenadier drivetrain makes a loud whine noise when I am cruising along at a constant speed. If it is not under load the noise stops... I think they all do this, I am curious is it the differentials, drive shafts or the transmission that I hear making the noise?

Being the engineering geek that I am, I want to try to reduce the noise..

I get whine from my front diff under power which peaks at 92kph/57mph, improved with diff oil change at last service but still there. Loan Grenadiers I have driven are don't have this whine. Will be escalating the issue at my next service, the dealer requires a sound recording to submit to Ineos for evaluation.

 

[Krabby]

Isn’t part of the reason is the transfer box gear driven?

 

[Clark Kent]

Isn’t part of the reason is the transfer box gear driven?

Well if you say anything on here enough times it becomes a fact
But yes, straight gear transfer cases tend to be louder than chain drive.

Ineos think it more an undocumented and no extra cost feature of the axle design. See the dealer bulletin attached to my post above.

 

[pmatusov]

Mine whines like crazy at about 2000RPM. @pmatusov reported a dramatic decrease in general noise after some sound deadening mat was applied.

https://www.theineosforum.com/threa...your-grenadier-today.12411127/post-1333344707

Larry, count on a couple of boxes of 4-mm stuff and some acoustic foam. But it does get quieter.

 

[sayntzero]

I get whine from my front diff under power which peaks at 92kph/57mph, improved with diff oil change at last service but still there. Loan Grenadiers I have driven are don't have this whine. Will be escalating the issue at my next service, the dealer requires a sound recording to submit to Ineos for evaluation.

Ha. I got the exact same thing. Exactly at 57mph I got a peak resonant whine. I just learned to live with it.

Then My front drive shaft failed and was replaced. Now I get the same whine exactly at 68mph.

Service center says it's my roof rack, even though it comes from under the floor in the front.

The loaners I have had do not make the sound at all.

 

[OkGo]

Watch out for axle and drive line issue... Dealer dismissed my complaint as, it is what it is, till the car shat out a lump of oil.