Alfa Romeo Owners Club of Australia Forum

Technical => 160 Series (90, 75, 164 Sedans) => Topic started by: GTVeloce on May 30, 2011, 04:15:42 PM

Title: Strange clutch noise
Post by: GTVeloce on May 30, 2011, 04:15:42 PM
Hi all

I have a strange noise coming from the transaxle. It only appears when i'm idling with my foot off the clutch and it's not always regular. As soon as I engage the clutch it goes away. I am intending to change the clutch thrust bearing soon (there is also a squeak when pressing and releasing the clutch pedal) and am wondering whther there is something else gone wrong that I can rectify at the same time? I should note the clutch works ok although selcting 1st gear at standstill sometimes can be difficult.

Thanks
Julian
Title: Re: Strange clutch noise
Post by: Sheldon McIntosh on May 30, 2011, 05:06:35 PM
Thrust bearing. 
Title: Re: Strange clutch noise
Post by: MD on May 31, 2011, 05:23:11 PM
To make a diagnosis on such scant info is very hard.

(Sorry for contradicting you Sheldon.)

A noisey thrust bearing usually shows up when you disengage the clutch and hold the pedal down. Usually because the lubricant inside the bearings has long gone and they simply are failing. This will be more like a grinding noise.

The noise could be a loose yoke on the input shaft spline. Very common. This noise is minimised when holding the clutch pedal down. This noise is more of a rattle than a grind.

Other noises at the rear can be broken transaxle front mounts, rear mount and very worn locating bearing in the rear rubber coupling.

The squeak could be a lack lubrication of the clevice pin in the clutch pedal. No lubrication of the pushrod in the slave cylinder. The clutch pressure springs themselves..you name it.
Title: Re: Strange clutch noise
Post by: ARQ164 Shane on May 31, 2011, 06:21:03 PM
Quote from: Sheldon McIntosh on May 30, 2011, 05:06:35 PM
Thrust bearing. 

sound like some one put a cat in the tranaxle.
Title: Re: Strange clutch noise
Post by: aggie57 on May 31, 2011, 09:05:23 PM
aaahhhhh - so what does the strange noise sound like?? Sorry, kind of useful info. and not trying to be a smart a.
Title: Re: Strange clutch noise
Post by: GTVeloce on June 01, 2011, 04:22:44 PM
Thanks for your help guys. I would rather spend my spare time on the GTV rebuild but I have to keep the 'mule' (daily driver) going well.
Title: Re: Strange clutch noise
Post by: Storm_X on June 10, 2011, 07:02:55 PM
does anyone know where i can buy a complete clutch bearing kit.