Vectra gearbox rattling

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Tue 9 Aug 2005 17:30
Vectra gearbox rattling - welshy
I have recently had a new (RECON) gearbox , new clutch and the slave cylinder release bearing done . When the car is cold it makes no rattle noise , but when warm it rattles on idle clutch pedal not pressed in , but when the clutch pedal is pushed in the noise dissapers . Garage is adament that theres nothing wrong .?? HELP!
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Tue 9 Aug 2005 18:51
Vectra gearbox rattling - madf
It's the clutch release bearing from the sound of things.

madf


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Tue 9 Aug 2005 19:03
Vectra gearbox rattling - welshy
Brand new . Is there a set way it should be setup ?
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Tue 9 Aug 2005 19:03
Vectra gearbox rattling - Civic8
Agree with madf
--
Steve
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Tue 9 Aug 2005 21:56
Vectra gearbox rattling - Number_Cruncher
Welshy,

Does the rattle stop as soon as you put any pressure on the clutch pedal, or only as you press the clutch pedal beyond the biting point?

Number_Cruncher
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Tue 9 Aug 2005 21:59
Vectra gearbox rattling - welshy
Welshy,
Does the rattle stop as soon as you put any pressure
on the clutch pedal, or only as you press the clutch
pedal beyond the biting point?
Number_Cruncher


I can hear the rattle occasionally when driving in 1st gear . But mainly when idling , light pressure on the clutch pedal when idling also make the noise dissapear .
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Tue 9 Aug 2005 22:11
Vectra gearbox rattling - Number_Cruncher
Hi Welshy,

If the noise dissappears with only light pressure on the clutch pedal, rather than having to press the pedal beyond the biting point, that supports the previous suggestions of the clutch release bearing as a potential culprit.

I have also seen this type of rattle been caused by some of the 'fingers' of the Belleville spring in the cover plate being bent. If this is the case, I would expect to feel some pulsing in the pedal.

One other *remote* possibility that may change as you touch the clutch pedal is the crankshaft moving too far in its thrust bearing.

Number_Cruncher
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Tue 9 Aug 2005 22:39
Vectra gearbox rattling - Colonel Panic
Most 'new' clutches come from a large company called National Autoparts in Nottingham. They make them as aftermarket 'new' items for most of the major motor factors, using names such as FAI, NAP, Ferodo, Unipart etc... They can sell them as new, even though they are reman.

They are made from second hand clutches that are rejuvinated to be as good as new, only the castings and pressings remain, all else is replaced, however, they are made to different qualities and prices for different customers. eg. ferodo specify and supply their own friction.

Needless to say some slip through with loose hubs or worn splines on the driven plates, and some lower-end brands are supplied with cheap far eastern release bearings and others with japanese NSK.

Sounds to me like you have aflakey clutch.
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