C5 Gearbox problem

[chunky79]

If you don't mind getting your hands dirty and have a safe place to work, then go for it mate.
Whilst you have the gearbox sump off then it could well be worthwhile changing the soleniods. No idea how much they cost, but you have to factor in, if you don't do them this time, if they are faulty you're going to have the cost of another gasket and oil for when you do need to change them.
Do your homework on doing a gearbox service first, if you don't get the correct amount of oil in afterwards all your hard work will be a waste of time. Keep everything as clean as possible too!

[Shoppinit]

To do any of those jobs you are going to have to drop the oil pan so you're in for the price of a gearbox service even if you change nothing. Unless you are comfortable doing it yourself you probably don't want to do it more than once so you might as well replace the bit that it coming up with a fault as well as the wiring loom which is a common weak point anyway.

If you can get the VB serviced at the same time then that would be good, but I don't know if ZF provide that service in the UK.

[RS6Rottweiler]

Thanks guys really appreciate all your help on this one, I'll speak to Star Performance and see if they are happy to do this work?

[RS6Rottweiler]

Hi Guys;

Latest on my gearbox a loom / solenoid change, I use a company called Star performance who are an independent VAG specialist and they think that to change the loom and solenoids that it is an engine out job as the V8 in the RS6 has a double sump and the loom and solenoids are in the inner sump that can't be removed in situ?

I am therefore looking for advise from anyone if they can confirm if the loom and solenoids are accessible with the engine in place? I personally think that if Audi have designed a double sump and have installed a wiring loom and solenoids that are susceptible to failure in the inner sump then that is a very bad design issue when you have to remove the engine to access these items?

I hope you can give me some advise or can you advise another repair centre that could undertake this work, or do you have the part numbers for the loom and solenoids and if the loom etc is accessible from the first sump I could have a go myself?

Lastly if I purchase the parts can you recommend somewhere that supplies these items that we can get discount from?

Cheers

[Shoppinit]

eh? Loads of people on here have had their loom replaced because of the gearbox temperature sender fault. Definitely not a box out job. Maybe they are confusing it with something else.

[SuprSi]

That's BS, the gearbox sump can be gotten to easily and there's no 'inner sump'. Literally take the gearbox sump off and the oil strainer and there you go, everything's in front of you. Hearing that from a 'VAG specialist' would have me worried. Might be worth finding another place, or read up on it and do it yourself.

ZF repair manual for 5HP24A
http://www.zf.com/na/content/media/unit ... 5HP24A.pdf

Keep us updated. Hope you have it sorted soon

[Shoppinit]

Here you go. Same box as ours more or less:

http://www.bimmerboard.com/forums/posts/527361

Look how accessible the solenoids and loom are once the sump is off.

[SuprSi]

Oooo, nice link Shop!

[bam_bam]

The gearbox wiring loom is accessible with the VB, dead easy but you'll loose all of your ATF so you might as well perform a gearbox service as already suggested.
My advice, ask Star Performance the exact part numbers they are suggesting need replacing and why. Then, arm yourself with knowledge.
If it is the gearbox temp sender/VB wiring loom, it's a GB/engine in situ job and it's a reasonably inexpensive part (by RS6 standards £70 - £90 for the loom), then it's your GB filter, pan and ATF.
If it's some solenoids on the VB then that's tricky, I wouldn't know who you could use in the UK. I'd consider a ZF specialist, although I think Grizz @ Unit20 would be better, he tends to be more hands-on with gearbox rebuild partners than other specialists. The favoured option would be to send the VB to 517trans in the 'states.

[longman h]

You can definitely replace the loom while the 'box is still in place, MRC did this when they carried out a gearbox service on mine.

I think I sent you the part number in a PM rotty so I'll see if I can dig it out.

I wouldn't even bother going back to that VAG place as they'll more than likely mess up the procedure in more than one way.
Give MRC a call and I'm sure they'll help.

[rossi46]

Chester Automatic transmissions could also be worth calling ( 01244 537070 )

[longman h]

*edited with correct part number*
Apparently I didn't send you the part number but was going to try and find it but didn't so sorry about that.

I think I've found the ZF part number which is 1058 227 020. If you speak to ZF directly or phone a ZF trans specialist, I'm sure they'll be able to help.

If I can find the Audi part I'll let you know.

[RS6Rottweiler]

Thanks again everyone,lots of great information and as I suspected the double sump was a load of tosh it just did not make sense? I will need to do more homework I think before I entrust my beloved RS6 to anyone. Does anyone have the contact detail fro ZF, i've looked online but I just seem to get a load of authorised ZF Transmission firms like Ecodrive etc so I think I it would be better to speak to someone from ZF direct with regards to the solenoids etc. I am in Scotland and don't mind having to travel to get the best person to carryout this work for me so if you can recommend a specific company who has carried out work for you preferably nearer to Scotland would be great?