odd noise from my Noble
odd noise from my Noble
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Discussion

mandybex

Original Poster:

24 posts

248 months

Wednesday 26th March 2008
quotequote all
I can hear a noise - which I think is coming from the engine- that increases in line with the engine speed, doesn't stop when I put it into neutral and yet despite getting the mechanic to sit with me, he hasn't able to identify the cause.

Its difficult to describe- and in some ways it almost sounds like a road surface noise - except I've driven my Noble everyday for two years for 100 miles a day, never heard it before and so I know I'm not imagining it!

At one time I thought it might even have been a wheel wobble but I can't feel anything through the steering and I've had the tyres changed recently.

I guess it could also be described as pistons working overtime.

Can anyone point me in the right direction?

Mandybex

Adrian W

15,493 posts

257 months

Wednesday 26th March 2008
quotequote all
Does it make this noise on overrun? the noise your discribing sounds like a cracked manifold or loose turbo.

mandybex

Original Poster:

24 posts

248 months

Wednesday 26th March 2008
quotequote all
What do you mean 'overrun' Sorry, showing my ignorance now!!

Adrian W

15,493 posts

257 months

Wednesday 26th March 2008
quotequote all
when slowing down i.e. go along in 5th or 6th and take your foot off the throttle and slow down, if you do this does it make the same noise?


Just noticed you say it does it out of gear, which would make what i said rubbish. Could be loose heat sheilds, engine bay side panels, or loose/rattly handbrake shoes/springs.

Edited by Adrian W on Wednesday 26th March 16:41

mandybex

Original Poster:

24 posts

248 months

Wednesday 26th March 2008
quotequote all
Yes, it makes the same noise, it just slows down in line with the engine speed. The only time I can't hear it is up to about 20- 30 mph. Funnily enough though, I mentioned to the garage that I thought the turbo guage was running a bit low. They disagreed but in view of your first comment maybe I should get it checked again

bernhund

3,798 posts

222 months

Thursday 27th March 2008
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Just a thought. My alternator bearing had to be replaced recently, the alternator itself was only 6 months old. It made a noise I could hear over my right shoulder. Might be worth a look coz it would run in time with the engine.

mandybex

Original Poster:

24 posts

248 months

Monday 31st March 2008
quotequote all
Thanks for all your help. I've booked it in with a chap called Richard Smith at Cullhompton in Devon who i'm told 'knows his stuff'! I'll let you know what the outcome is.


Ash 996 GT2

3,836 posts

270 months

Monday 31st March 2008
quotequote all
You mention that you have just had new tyres fitted.

what are they, Bridestone? Are the new tyres different from the ones you had before?

Could it be tyre noise?

Driving 100 miles a day, you know what is right and what is not, just difficult to explain to someone else.

Good luck and keep us informed.

mandybex

Original Poster:

24 posts

248 months

Tuesday 22nd April 2008
quotequote all
Thought I'd get back with the outcome to the odd noise on my Noble- and it was the wheel bearing and the Hub- and a small issue with the heating- £1900!! But at least I know what its like when a bearing is on the way out - and thats usful because I'm told Noble know they have a problem...........

AMG Merc

11,955 posts

282 months

Tuesday 22nd April 2008
quotequote all
mandybex said:
Thought I'd get back with the outcome to the odd noise on my Noble- and it was the wheel bearing and the Hub- and a small issue with the heating- £1900!! But at least I know what its like when a bearing is on the way out - and thats usful because I'm told Noble know they have a problem...........
That's not a small issue with the heating there (£1900)! What was up?

NobleGuy

7,133 posts

244 months

Tuesday 22nd April 2008
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Got to be the matrix at that price. I'd almost do without the heating altogether at that rate.

Adrian W

15,493 posts

257 months

Tuesday 22nd April 2008
quotequote all
NobleGuy said:
Got to be the matrix at that price. I'd almost do without the heating altogether at that rate.
or the upright the bearing sits in

Pinnacle

168 posts

270 months

Wednesday 23rd April 2008
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as silly as it might sound, I would also check the right front corner of the engine bay. A few years back I had the hose from the turbo up front going back to the intercooler slide downwards in that front mount, and hence started touching that serpetine pulley on the corner of the engine. Took some time and carefule looking to find it, but hasnt happened since due to a modification to the bracket to not allow the hose to slide down anymore.