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M90 gearbox noise

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Old Aug 21st, 2021, 15:25   #1
360beast
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Default M90 gearbox noise

Is anyone else running an M90 with a dogdish flywheel and managed to make it quiet?

Mine makes noises in 1st and 2nd and a bit in 3rd, I can't hear in 4th or 5th as the road noise is too loud. If I'm in gear and come off the throttle the noise is even worse especially 2nd it sounds like the gearbox is falling apart!

It is also a lot louder if I drive for more than 30 minutes, short journeys it isn't too bad.

Is there a way to remove or reduce this noise? I've read plenty of threads of people saying it is fine and is due to the gearbox layout and not to worry, I just hate the noise and want it quieter!
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Old Aug 22nd, 2021, 11:30   #2
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They are fussy on oil.

Noise on overrun is normal but if you constantly have noise that suggests bearings are on the way out
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Old Aug 22nd, 2021, 15:40   #3
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They are fussy on oil.

Noise on overrun is normal but if you constantly have noise that suggests bearings are on the way out
I've used the genuine Volvo oil.

I have been thinking about pulling it out and getting it rebuilt as I have suspected the bearings are worn, I might as well just do it and then I know the gearbox is okay.
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Old Aug 22nd, 2021, 20:01   #4
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I've used the genuine Volvo oil.

I have been thinking about pulling it out and getting it rebuilt as I have suspected the bearings are worn, I might as well just do it and then I know the gearbox is okay.
Better off with an auto
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Old Aug 22nd, 2021, 20:37   #5
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Better off with an auto
Wash your mouth out!
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Old Aug 22nd, 2021, 21:05   #6
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Quote:
Originally Posted by 360beast View Post
Wash your mouth out!


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Old Aug 22nd, 2021, 22:53   #7
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Quote:
Originally Posted by 360beast View Post
Wash your mouth out!
Yes.................wot he said!!............Auto indeed, tut'.

Luke, l've changed M90 oil recently at great expense, proper stuff and all that and l've now noticed quite a whine in first.
Now done just over 208,000, hardly run in really.................
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Old Aug 22nd, 2021, 23:18   #8
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Quote:
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Better off with an auto
I was going to say something similar but thought it would be a bit mean!

Typical your gearbox needs an overhaul. Very annoying having to remove and refit.

Hope you get it sorted for reasonable cost Luke.

James.

Last edited by volvo always; Aug 22nd, 2021 at 23:23.
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Old Aug 23rd, 2021, 08:08   #9
lynns hubby
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Smile

At least is a nice easy box to get out.
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Old Aug 23rd, 2021, 08:19   #10
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Quote:
Originally Posted by omc 47 View Post
Yes.................wot he said!!............Auto indeed, tut'.

Luke, l've changed M90 oil recently at great expense, proper stuff and all that and l've now noticed quite a whine in first.
Now done just over 208,000, hardly run in really.................
Exact same as mine Andy, I drove the gearbox donor and had no noises at all (204k miles now about 208k as well!) It has a pronounced whine in 1st, I wonder if the new oil is a backwards compatibility that actually isn't compatible, after all it says it is for an XC90 T6 on the tub!
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