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[smity]

Hi,

Comeing home from work yesterday and could hear like a grinding metal on metal noise from engine bay bit like a rattle, investigating further it sounds to me like its coming from a pulley could it be a bearing gone or something?

any ideas?

I could post a video of the noise if wanted

[rickyboy]

Go ahead and post the vid.

[jonathanh]

update your profile so we know what car you have.  Could be related to the aux belt run and components in which case it is annoying and needs attention.  Could be related to cambelt and tensioners in which case it is very serious and do not use the car until it is fixed.

first step is probably to drop the aux belt off to see if it stops the noise.  If yes then it is related to aux belt.  If no then investigate further.

[smity]

Sorry car is : p reg omega 2.5 v6

Looking at it i think its related to the aux belt maybe the tensioner pulley can i just buy a pulley and bearing to replace if it is that?

[Marks DTM Calib]

Pop the aux belt off and run it for a short period without to se if the noise goes away (dont run it long though as the water pump wont be driven).

If it does go away then check the alternator, tensioner pulley and water pump for play/roughness.

Its likely to be the aux tensioner pulley in which case you can get them as a seperate item for about 25 quid.

[smity]

Ok belt off and ran no noise at all, so just got to see if i can find the problem pulley, but just span the tensioner pulley and it seemed ok

[smity]

ok got it, its the bottom right hand corner pulley looks like it drives water pump? hard to turn and very stiff is this going to be a new pump jobby?

[smity]

it has like a plate over the pully and the pully spins behind it?

[Elite Pete]

IIRC Bottom right is the aircon pump.

[rickyboy]

IIRC Bottom right is the aircon pump.

Recalled correctly!  

[smity]

right so do i need a new pump or could there be another fix?

[rickyboy]

Personally I still think you need to change the tensioners.

[Elite Pete]

A new one would cost a fortune, I would try a good second hand one.

[smity]

Personally I still think you need to change the tensioners.

The tensioner seems to spin freeley the aircon pulley doesent but it is driving a pump, there is a metal plate before the pulley which i can spin with the pulley stopped should these be a tighter fit?

Why do you think its the pulley mate?

[smity]

i ment why do you think its the tensioner