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VW T4 Gearbox
mistergrumpy - 24/1/12 at 10:31 AM

I thought I'd ask this here as I don't seem to get much joy over on the VWT4 forum and their knowledge bank is nowhere near as wide as it is on here.
I bought a 2001 VW T4 the other week and I've noticed that 2nd and 4th gear both tend to slide out when I let the revs right down, like just coming off the clutch and wanting the van to pull under its own steam. I say slide as they don't pop, the first indication you get is a revving when you want to move and I have to pull the gearstick a few millimeters back and we're away again.
I've heard that it could be worn synchro's and also that it could be a worn selector. The gears themselves go in fine and 2nd seems to be the worst, it doesn't happen all the time and if I keep my hand on the gearstick then it doesn't come out.
Any ideas? If synchro's are suspected does anyone have a rough cost to have them replaced? I'm thinking it may be cheaper to buy a new box if not.


mad-butcher - 24/1/12 at 02:04 PM

you bought it from a dealer didn't you, go straight back from work without changing and explain your problem, worked with a mate and he's only a fireman, nudge nudge wink wink

tony


Agriv8 - 24/1/12 at 02:34 PM

sounds like syncro but my personal experiece these poped back out rather than slid back out b0t that was on a 1.9 derv shitreon bx with 200k on the clock.

A long shot and free to try.

My Audi A6 the day before a 2 day trip across europe for summer hols with familly. I pulled out of a junction and snatched for second and completely fluffed it afterwards I could not engage 2nd and 4th really though I had bent a selector oh bu66er. so limped home and calmed down with a cup of tea and thought about it logically.

it seems the shaft for fore and back selection has a slider on ( to stop you bending the sectors i suspect ) so what I had done is rather than going over the H pattern in a strait line I had come across and engaged the slider further into the housing ( so there was not enough throw to engage the gear fully ) so gently reversed the process and while in neutral gave the gearstick a push the other way (basically centralised the gearstick int in the gearstick gater so it was strait up while in neutral rather than an angle ) and all was ok. So possibly yours has only moved a little and is not throwing it far enough to get the 'Detent' on the gear selector shaft.

So try in netral in between 1 and 3rd and pushing the gearstick towars the screen.

Regards

Agriv8


mistergrumpy - 24/1/12 at 05:19 PM

It wasn't a VW dealer I bought it from, more a van sales place. He knows the gearbox is like this (only after I pointed it out to him to use it as a bargaining point!) and has written on the receipt 3000 mile warranty excluding gearbox!

I'll try the pushy thing when I get the van back thanks. It's in having the timig belt done and should have been back today but for the fact that he can't get a camshaft seal till Thursday and we both thought it was the crankshaft seal before it went in. Glad I'm not doing the job myself now as I nipped in to see how he was doing and he was swearing and had snapped a water pump bolt
I may try to replace the selector rod bushes too and these are known to wear and the selection is very sloppy, like a stick in an empty box.

Thanks for the suggestions so far. If anyone has any others or can comment on the price of a repair I'll be grateful. Thanks.


bobthebuilder - 24/1/12 at 06:29 PM

hi chap,
we had a 2004 t4 van at work with a similar problem, then going down the motorway about 85 the bearings let go on 5th then took 2nd and 4th with it.
we tried to find a replacement but they are like rocking horse poop,and the ones you do find are nearly as much as the van.
i would reccomend a strip down and inspection before it goes too far


mistergrumpy - 24/1/12 at 09:52 PM

You have a real way of cheering a man up there Bob but seriously, thanks for the advice mate, it all helps.


bobthebuilder - 24/1/12 at 10:18 PM

yes i always like to look on the bright side.
hope its nothing serious, might just end up needed a oil change.
good luck


mistergrumpy - 25/1/12 at 06:59 PM

Thanks mate

I'd still appreciate anything else on this. Anyone got experience of gearbox repairs and the sort of money we're talking please? Anyone?


mistergrumpy - 29/1/12 at 12:18 PM

Just to put finish to this thread. After cleaning and loosening the gear linkages and and arm on top of the box I now have 2nd gear back so I'm hoping that with a bit more of a clean, grease and maybe replacing of a few sloppy bushes I'll get 4th back too.
Thanks for the suggestions and help.