Technical Whining noise at 30mph

[jamesgould]

I have a 6 year old, 40,000 mile Bravo 1.6 multijet (6 months old to me). It had been serviced regularly by fiat before I got it and had had no problems.

I have had new brakes front and back, rear suspension and a cam belt fitted (expensive!), I am fitting some new front suspension tomorrow. When I am going along at 30mph in 3rd or 4th there is a whining sound when I am not pressing the accelerator.

When I press it the engine starts to sound and as far as I can hear the whining goes away. It does not happen at any other speeds.

Any thoughts?

 

[Matthewr1990]

I have a 6 year old, 40,000 mile Bravo 1.6 multijet (6 months old to me). It had been serviced regularly by fiat before I got it and had had no problems.

I have had new brakes front and back, rear suspension and a cam belt fitted (expensive!), I am fitting some new front suspension tomorrow. When I am going along at 30mph in 3rd or 4th there is a whining sound when I am not pressing the accelerator.

When I press it the engine starts to sound and as far as I can hear the whining goes away. It does not happen at any other speeds.

Any thoughts?

I think you've answered your own question there. It could be your cambelt mate.

 

[jamesgould]

Maybe I was not clear. I got a new cam belt this week.

 

[Matthewr1990]

Maybe I was not clear. I got a new cam belt this week.

Exactly, if it's not fitted quite white it could be creating your whirring noise. Unless of course the noise was there before which you didn't mention in your original post.

 

[jamesgould]

It was there before, sorry, that was not clear before. I mentioned the New cam belt to discount that as the issue.

 

[tomharrison]

i think that may be your gearbox, mine does it in 3rd and 4th, but I'm not sure your model has the m32 gear box

 

[jamesgould]

Alright. So does the gearbox need replacing or do I just put up with the noise if it is that?

 

[Matthewr1990]

The diesel gearbox is actually a pretty tough thing, in comparison to the brittle m32 box they put in the T-jet engines. It might not even be your gearbox but if you suspect it is get it in to a garage for them to take a look, it's always good to try and replicate the issue to the garage who will look at it. Dependant on the issue it may just be a bearing replacement, or could be serious and need a whole new gearbox. It might even be something daft like the bearings in your wheels but it's probably best to get it checked at a garage mate

 

[Most Easterly Pandas]

Maybe I was not clear. I got a new cam belt this week.

What else what changed as part of this job? Just the belt