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More gearbox news and advice required

day1zero

day1zero

New member
Changed the oil....

The magnetic gearbox sump plug looked like this ......

http://i360.photobucket.com/albums/oo48/chrisandmel-photos/P1010831.jpg

and after cleaning

http://i360.photobucket.com/albums/oo48/chrisandmel-photos/P1010835.jpg

Still have same problems will not engage any gear until car warms up.....I do get some drive when trying to engage a gear but gear is not fully selected...once warm all gears selected with no problem at all...

Any suggestions on a way ahead !!!! before spend thousands !!!!!!

 
Just noticed this......

Engine off .....all gears engage normally....

Fire up engine cannot select gears until engine warm.......any suggestions ?
 
Agree with Maurice. Sounds like your clutch is dragging. Get the fluid changed first, should be about 100 pounds or less. Whilst they do this, they will know whether the master or slave cylinder have had it. Neither is big money, through the slave is fiddly. If you can change the gearbox fluid, you should be okay bleeding the clutch. Is the car a C2 or a C4?
 
Changed fluid to one recomended by GR....will probably try a clutch bleed next.....looks a bit fiddly though......any top tips/links on bleeding the clutch would be most appreciated!!!!!
 
What was the consistancy of the crud (tech term) on the sump plug - metal shards or filings?

Regards
Mark
 
Mainly fillings......old oil looked like it had had it...dirty brown colouring and slightly cloudy. Oil change not cured issue......still believe clutch dragging......been quoted £730 + vat for new clutch. ....however, why does it all work fine when warmed up?.......all gears engage when engine off....as soon as fired up unable to select any gear.....once warm can select all gears (approx 10 mins)..with 2nd and 4th being the first gears to be able to be selected.

Can anyone explain "clutch dragging" ? any further advice....my next step is to bleed slave cylinder see what happens ?

Many thanks
 
My indie, who changed my clutch not longer after I got the car, showed me the old parts afterwards and explained what happens.

It happens especially in cars that don't get much use (includes mine before I got my paws on her[:D]).

There is a fork shaped metal part (I forget technical name) that levers the clutch plates apart when you press the pedal. This bends (or wears) over time (more if the mechanism is stiff through lack of use). Because it gets bent it does not move the plates apart enough, so the clutch drags, which makes the plates wear much quicker than they should.

All that said, I never got the dragging symptom, just clutch started to slip.

But I guess slave/master cylinder problems might cause drag too.
 
The clutch when depressed disconnects the engine from the drive train. In doing so it also allows you to change gear. When the clucth mechanism fails it will sometimes not fully disengage the drive train thus the engine will continue to turn the gearbox. It's like trying to engage gear with the clutch only partially depressed. Normally this will be due to the master or slave cylinder failing, so when you press the pedal some fluid gets past the seal and the clutch only partially disengages so the clutch stays partially pressed to the flywheel on the engine. Hence "drag". It is worth checking both slave and mater cylinder. Both have belows after the seal which will be full of oil if either has had it. Not horribly expensive and certainly cheaper than a clutch.

Good luck.
GR
 
The clutch does disconnect the engine from the gearbox, but there is always some drag. The syncro's overcome the speed mismatch and allow engagement of the splines.
If it won't go in gear without crunching, then the balking rings are seeing a speed mismatch. This can be due to excessive clutch drag, or lack of friction between the syncro hub cone.

Strangely, I had the same problem with an EVO gearbox, was fine then would not engage easily until warm after changing the gearbox oil. However a clutch change fixed it. The oil seemed to make the problem noticeable, but the problem was the clutch.
 
I used to get something similar on my 3.2, but only with first gear. A good yank with the clutch down into second seemed to sort it until the engne warmed up, could get into first easily then. I was told it was the selector gets a bit worn. I don't know how much a 3.2 and a 993 differ
 
ORIGINAL: Giles Veitch

I had a problem selecting gears in the forward plane-3rd and 6th which was diagnosed as needle bearings in the diff housing coming out and jamming up the system- JZM sorted it out- not an uncommon fault by all accounts- my car is a highish mileage 1995 car- get it checked out
Click to expand...
What was done to reolve this? Was it a simple fix or a gearbox rebuild?

Darren
 
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