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Gearbox / clutch issue on 1987 Turbi HCI

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Hi,

My car was driving very fine this afternoon when, all of a sudden, I could not engage any gears any more.

The gears lever works fine, nothing is disconnected at the gearbox but no gear engages.

If I accelerate, nothing happens but a slight sort of "rattle" noise can be heard.

Any ideas ?

Regards

Bernard

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Guest bharper

If you are saying it will not now go in gear without a lot of noise of gears raking, I would first look at the clutch slave cylinder for motion, proper clearance on its engagement shaft, and check the front clutch cylinder for fluid level. If not getting proper motion of the slave cylinder, try bleeding it, may just have air in the system, which probably indicates the slave cylinder needs rebuilt. If you do need to rebuild the slave, I would do a super light hone with a brake cylinder hone just to break up the surface with a nice crosshatch, and replace all the rubber parts. Would then rebuild the front clutch cylinder too...

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OK, Thanks, I will check that.

I can actually move the gear lever with the engine running without any problem, with just a slight noise

I can also move the gear lever from under the car without any problem either but no gear will engage.

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Guest bharper

that sounds like the clutch totally gernaded, or the input shaft broke? anyone else to chime in?

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worn splines on inputshaft and into primairy shaft.

regarDSm

Harry Martens

www.ds-vitesse.com


with kind regarDS,

Harry Martens

www.ds-vitesse.com

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Possibly selector mechanism in the box, shaft or forks.

Is there the normal amount of resistance to you moving the gear lever?

Yes- then think clutch or input shaft type of issue

No- think selector.

If it's clutch or input shaft then you'd still "feel" the gear being selected, justy not be able to use it, so can you still select a gear ( gear stick moves into place, and you cannot move it sideways beyond normal play levels).

If it's selector area you'd be able to put the gear stick where it would be for 3rd and simply move it sideways to where 5th would be without moving back to neutral.

Andy

Andy

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Hi,

Gear lever moves in any direction (even reverse) - with the engine running without actually engaging any gear.

I can do this from inside the car or from under the car at the rear by moving the selector by hand.

I believe I can actually hear the gear being selected in the gearbox but no gear engages.

When sitting in the car with the engine running there is a slight "friction "noise at the rear which amost disappears when I depress the clutch pedal.

There was absolutely no previous sign of slipping clutch neither any noise when the gears stopped engaging.

Regards

Bernard

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In that case I'm more inclined to say it's selector mechanism issues.

To "select" the gears that then do not engage, do you have to depress the clutch as normal or will it allow yuo to do so without using the clutch?

Andy

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I can "select" the gears without depressing the clutch at all,

either by moving the gear lever when sitting inside the car

or by moving the selector by hand from under the rear of the car.

Depressing the clutch pedal just attenuates the slight "friction" noise that can be heard when the engine is running.

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Then I'm afraid you probably need the assistance of a good gearbox specialist.

TBH it's not that bad, I had mine (Renault UN-1) re-built, with new synchro ring and seals it was only a couple of hundred pounds.

Andy

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If you are actually engaging gears with the engine running and not using the clutch, the link between the engine and gearbox is broken. That is to say, something is wrong with your clutch such as it has gone over-centre on the springs or the middle has ripped out for example, or you input shaft is broken.

The noise you hear could be the two ends of the shaft rubbing or the clutch centre rubbing against the rest of the friction plate.

I think you need to separate the gearbox and engine and take a look.


S4 Elan, Elan +2S, Federal-spec, World Championship Edition S2 Esprit #42, S1 Elise, Excel SE

 

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If you have the Citroen gearbox, it might be worth taking the top off it and looking inside.. you could then check if the selectors were intact and whether the gears were actually engaging. Easy to do, and useful diagnostically. The selector mechanism is such that the cable moves everything across the gate, and the rod linkage selects the gears..the shaft on the rod linkage may have fractured or the selector itself have broken or come adrift inside the box. Something to do before you get serious!!


Scientists investigate that which already is; Engineers create that which has never been." - Albert Einstein

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OK,

Thanks everyone for your kind help.

I will get back to you once the job is done (hopefully...)

Regards

Bernard

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Hi All,

I have put the gearbox out.

The clutch parts have normal wear.

The issue is a worn clutch shaft.

I have just and email to SJSPORTSCARS to see whether they have this part for it's not in their catalog.

Also, although I have not opened the gearbox , I believe that the "female" part in which the clutch shaft engages might have to be replaced too.

What do you think ?

Regards

Bernard

I am also -mailing Harry Martens at DS Vitesse who seems to be specialised in that kind of issue.

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Kudos to Harry on this one! Well done!


Modifying esprit's.. now that's fun..

PS... I AM NOT A CERTIFIED MECHANIC.. I Have chosen to help those in need, in the past and must not be construed as being a certified technician.

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