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Discussion Starter #1
Hello, I have bought a Mito 155 tb veloce 2 weeks ago. However today I can hear a whine noise from what goes in hand with the revs/speed.
I can't really describe it as far as its a drone that makes the car sound a bit like an automatic until the turbo overpowers the drone when you put the foot down.
It is a lot easier to hear in higher gears due to the noise/revs of the engine and it's more clear when you come off the gas when you've accelerated a little.

Any ideas?
 

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I have a similar issue. Mine does it in neutral so I'm pretty sure it's not the gearbox plus seems to come from the wrong area. Alfa workshop suggested it may be alternator bearing showing early signs of going but we never really came to a conclusion (was in there for something else) I'm just waiting to see if it gets worse such that I can eventually discern where it's coming from.
 

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Mine did it in neutral when the gearbox went. Road speed related rather than engine revs. I'm puzzled what you mean by the turbo noise overpowering the drone, my turbo is totally silent.
 

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Speed related whine is normally gearbox related (m32 ;)).

In 1st gear, does the gearstick move when you go on/lift off the accelerator?
 

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Which bit went on yours, Rockhopper? Was it pitted pinion bearings, rather than the 6th gear bearing?

I've become aware a fairly quiet whine I notice at certain speed ranges (and road-speed related rather than engine speed, gear/neutral makes no difference) in the Mito 155 I bought a few months ago. Having read this thread and read about the M32 gearbox I'm thinking maybe I should get an expert to listen to it sooner rather than later!
 

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I'm not exactly sure to be honest. I had a road speed related whine that stayed the same in neutral and in all the gears with no movement of the gear lever. I had all the bearings changed which cost around £600 inc vat. You can do it with the box in the car. Get it done sooner rather then later, if the bearings seize or break up then its a whole lot more expensive!
 

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Discussion Starter #9
It's do with speed yes, hear it more higher up the gears, however 5th is the easiest to here the noise. ( my sensitive ears can here it in second, my old man can only just in 5th ?'
Not noticed any movement in the gear stick at all ( will double check). I mean if I put it in higher revs or put my foot down the sound of the turbo/engine over powers the whine noise. Having read online and othe Forums pretty sure it's the m32 gearbox problem.

What would people recommend take it to a local garage to get there opinion? Or just go by everyone's experience it's the gearbox bearings.(not keen on paying Alfa Romeo to check it over having read the similarities online).

What next take it tona local garage to do it or anyone recommend any 'Alfa specialist' in the Teesside area?
 

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Discussion Starter #11
The nearest specialist to me is FAST (Fiat Alfa specialist ) anyone used them before? Based in Stockton
 

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Being a 155 I am guessing it is over 5 years old? Has the timing belt ever been changed?

I fitted a bad waterpump to my Giulietta which introduced an engine speed matched whine.
 

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Discussion Starter #13
About five years ago it was so is due soon. Sounds to me it's coming from the gearbox area. Going to take it to an Alfa specialist near me soon.
 

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I described the characteristics of the whine I'm hearing to the Mazda dealer I bought my Mito 155 from a couple of months ago (I've only done 600 miles in that time). Mine is road-speed related rather than engine speed (and gear selection/clutch/neutral makes no difference) and most noticeable at 45-50mph (but still isn't that loud at that speed, and is just about audible at slower and faster speeds if you know what you're listening for). The dealer said it sounded like it could be tyre whine to them (of course they won't be particularly familiar with the Mito or the M32 gearbox). However they also said it was still best to get it checked out under the warranty, to be on the safe side, so I'm going to get them to arrange for a local independent Alfa specialist to have a listen at some point in the next couple of weeks.
 

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Being a 155 I am guessing it is over 5 years old? Has the timing belt ever been changed?

I fitted a bad waterpump to my Giulietta which introduced an engine speed matched whine.
This may not be a bad shout for the noise coming from mine. Timing belt has been done on mine though admittedly it was fine immediately after so maybe it's just taken some time to develop.
 

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I've now had an Alfa independent listen to the whine on mine on a short test drive (getting up to 50+mph where the noise is most noticeable). He tested direction changes and it didn't seem to change with changing road direction or road surface so he seemed pretty sure that it was transmission related (even though it happens regardless of being in gear or clutch in or not) and that it would need gearbox opening to investigate further. Whatever the issue, it ought to be covered by the warranty company, but they won't cover the cost of the gearbox being opened if it turns out not to be an issue in the gearbox so I want to be really sure before the gearbox is opened!

So I took it to a transmission specialist today who had a short test drive. The mechanic stuck to roads near their garage and could only go up to 30mph where the noise is still pretty quiet (and to my ears, not so easy to pick out with general tyre noise), but did say he could hear a noise. However he said because it happens in neutral he wasn't convinced it was gearbox-related. He thought it more likely a wheel bearing or tyre whine (although he did notice it didn't change with direction change, I think). He was a bit overly dismissive of it potentially being gearbox-related for my liking actually - I have read of M32 whine issues which can occur in any gear + neutral (diff bearing perhaps?). I'm also not 100% convinced the noise he was paying attention to was the same noise I was (the car generally has a lot of tyre/road noise, although I wouldn't describe those as a whine).

So two conflicting opinions!

I've phoned a second transmission specialist who said from the symptoms I described he thought it was most likely wheel bearing, even though I said the noise wasn't changing with change of direction. He did say diff bearing was a slight possibility as well though but he said he's not yet had an M32 box in where the diff bearing goes without one of the gearbox bearings having gone (and he's dealt with a lot of M32 boxes). He's offered to have a listen, so although it's a bit further to drive to this one I think I'll take up the offer to get a third opinion.

This is turning out to be a bit of a PITA!
 

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This is turning out to be a bit of a PITA!
This probably doesn't help, but:

If it ain't broke, don't fix it. All you have is a have a faint whine. It might as well be something harmless, and chances for that whine being a precursor for something totally catastrophic are slim (to none).
 

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This probably doesn't help, but:

If it ain't broke, don't fix it. All you have is a have a faint whine. It might as well be something harmless, and chances for that whine being a precursor for something totally catastrophic are slim (to none).
It's actually reasonably noticeable at 45mph upwards - it's not loud, but at the volume I listen to music at (which, granted, isn't particularly loud) I can often still notice the whine even with music playing as long as road noise/rain isn't loud enough to drown it out.

About the only harmless thing that's been suggested so far from the people I've spoken to has been tyre whine. If it's a wheel bearing, then the bearing needs replacing. If it's a diff bearing or something else gearbox related, then leaving it too long can cause other damage to the gearbox and be a lot more expensive to fix as a result, so best to sort it early (plenty of posts on vauxhall forums to that effect). And I'd rather get it sorted while the garage which sold me the car or the warranty company are responsible for covering costs!

So far it's only had two short (less than 10 minute) test drives by the two different mechanics and I've had two different opinions, so I'm going to get a third opinion.
 

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Discussion Starter #20
Your in the same boat as me. I'm getting a opinion from an Alfa specialist tomorrow, I'm pretty sure it's gearbox related. I can understand the road noise is loud in mine also, however can't understand how it can make a whine like the one mine does.

It's quiet and the radio does need to be turned low or off to hear it, but now I've heard it, it's pretty annoying.

Another thing is the flaming squeeky brakes! Now when driving in town traffic or pressing/releasing the brake gently it makes an awful squeek!
 
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