Clutches What Make To Use or Not To Use

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Tom Burton 22 years ago

Hi - again :)

Vie posted questions relating to this problem here before, so I'll just give a brief outline of the problem

Car : Vx Corsa 1998 1.7D

Problem, whenever the driver gets on the power there is a sharp jerk and a thump, almost like there is slack in the transmission, as soon as I mention it to anyone they say Engine mounts.

So I changed them!

No Change....

It has since been suggested to me that the it could be the CV joints, or clutch springs, however when I drive around on full lock in a carpark I get no clicking crunching noise

Other people have been more supportive of the clutch idea.

This is beginning to sit well with me, the car had the clutch changed at about 50k, due to a shagged out release bearing, the guy ( a now ex-friend) had never changed a clutch before but was guided by his father ( time served mechanic) and another able mechanic. As I recall, the two clutches they bought initially was wrong, and then they said that the car had the wrong clutch in, in the first place.

I was a little suspect of this as far as I knew the car had never had a clutch changes since new, but I'm a little suspect of the mileage, and it worked at the time so I didn't really care.

I THINK the replacement unit was manufactured by SACHS[?]

So I think I am going to replace the clutch again, despite no slip, car now

105'000k at a independent clutch specialist, I have been considering supplying the clutch myself from Vx Main Agent then I know its at least half decent and a chance of being the correct item?

any opinions?

Tom

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Pete Smith 22 years ago

I'd check the driveshaft splined (or tripode if fitted) for wear.

I had something _exactly_ like this when the input splines on a CV joint had almost all worn out. All the power was going through the two or three that were left, that predictably went bang!

You can check for this by jacking one side of the car up, and looking for slack anywhere in the CV or driveshafts for that side. Perhaps the wheel & CV outer turn, but the CV doesn't, or perhaps the driveshaft will, before getting any resistance from the engine/box (leave it in gear).

HTH,

Pete.

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Fred 22 years ago

It aint the clutch, gearbox maybe? Stick it in first gear with the handbrake off and rock the car backwards and forwards ( don't pussy foot around) , you should be able to hear the noise you are looking for.

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Robin Graham 22 years ago

It sounds to me that you work on the principle of 'let's change something and hope it solves the problem' rather than finding out what is specifically wrong then dealing with it. Changing the engine mountings without establishing that one or more of them was faulty was the first symptom. Thinking of changing the clutch again is the second.

Rob Graham

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DuncanWood 22 years ago

Although finding ways of diagnosing engine mountings without changing them is tricky.

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Jon 22 years ago

LUK recomended I heard VX agent clutches are recon

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Tom Burton 22 years ago

Well I asked here, I asked a couple of mechanics, and I asked Vx parts counter, and they all said engine mounts..

So I changed the windscreen...

Again following on from advice, hoewever i have been pointed to a new garage with a good reputation. The splines on the driveshaft might be an avenue for investigation, but i think im just going to say to the mechanic, its doing xyz syptom, I've changed the mounts, have a play and tell me waddya think.

Besides i dont recall the car haveing this problem before the clutch was changed in the first instance, but, i cant remember exacly when it started.

Indeed, and as one is a PITA to get at down the side of the timing belt and it only cost a few quid, I'd be tempted to change it again the next time the belt is due.

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Clutches What Make To Use or Not To Use

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