Hi all,

 

I’ve got an annoying squeak coming from the engine bay that I’m struggling to diagnose; any help gratefully received!

 

So far:

 

Very slight noise, assumed to be aux belt, so belt replaced at service last Autumn. 

 

Continued for ~ 2 weeks after service then stopped completely.

 

Squeak returned but worse last week, changed the aux belt, no better.

 

Changed the tensioner (manual) as appeared worn, still no better - if anything getting worse. 
 

Seems to be worse when engine under load eg. accelerating from low revs (like from 30mph in 4th).

 

Alternator and air-con pulleys seem ok and load from electrics or air-con makes no difference.

 

any thoughts before I relent and take it to the garage?

 

Thanks

On 04/03/2023 at 15:51, Rojo87 said:

aux belt

Remove aux belt and see if the noise is still there would be my first move.

 

Thanks. AG Falco

Thanks.

Is it ok to drive the car without the belt on? It’s impossible to make the noise when the car is stationary…..

Belt slipping due to damp in the air?

On 05/03/2023 at 17:31, Rojo87 said:

Is it ok to drive the car without the belt on?

Just start the engine but not drive it, but.......

 

On 05/03/2023 at 17:31, Rojo87 said:

It’s impossible to make the noise when the car is stationary…..

This would suggest the noise is rotational, eg from the transmission, gearbox, wheel bearings, brakes?

 

On 04/03/2023 at 15:51, Rojo87 said:

Squeak returned but worse last week, changed the aux belt, no better.

 

Changed the tensioner (manual) as appeared worn, still no better - if anything getting worse. 

So maybe this is not it.

 

Does temperature affect it, or distance travelled, or when you turn the steering wheel, or if the brakes are applied?

Any other clues?

 

Thanks. AG Falco

SOLVED!

 

Turns out is was a heat-shield where the gear change cables go to the gearbox. Fixed with a big washer and a new clip.

 

Definitely sounded rubbery though and it was weird how it seemed related to load from the crank.

 

thanks for your help all.

 

Robin

23 hours ago, Rojo87 said:

Turns out is was a heat-shield

 

Bent after going through a puddle?

 

23 hours ago, Rojo87 said:

related to load from the crank.

 

Engine moves more when under load, enough to touch.

 

Thanks. AG Falco