Suprazz

So i just changed my oil and i inspected my valve body and the conductor plate and everything look fine but i dont really know what to check.


With the new oil the noise dissapear but the transmission still not going well. I dont know if i change the conductor plate or the valve body. Is there any ways to test this?

My other idea is to buy a used transmission with a warranty. And the price is almkst the same as the valve body itself at mercedes.

Glyn M Ruck

How did the fluid filter look. Was there a lot of crap on the filter surface?

I'm trying to establish the level of clutch wear. What mileage is on the car?

You are at a decision point. Throw a $150 conductor plate at the problem in the hope it will fix all. Or do a full valve body replacement on an old transmission that might need a proper rebuild of clutch packs etc which will cost too much.

Answer the questions - I think I might be inclined to go for a used transmission with a warranty & lower mileage??. Once installed it will just have to be adapted with Star.

Suprazz

The filter look good.

It was pretty clean. Not too much crap on/in it.

I'm in Canada, do you have any recommandations where to buy the conductor plate? I saw fews on ebay and other website but in general I order my parts from autopartsway.ca but the conductor plate is ~250 on this website. A little bit high but no shipping and duty.

Glyn M Ruck

RMeuropean have it for $180. Seems to have gone up a little. Was $150 a few months back.

Just one thing. Because of the labour involved. If you are going to remove the valve body to install a new conductor plate you must check the solenoids at the same time to ensure no broken springs & make sure there is no crap in the shift plate. Otherwise you may as well change the whole valve body while you are about it.

I'm pleased you found very little crap on the filter. It shows the rest of the transmission is still in good shape.

Suprazz

I did check almost everything.

I removed the conductor plate from the body valve, check all connections with ohm meter, then, I opened the body valve. Was pretty clean, only few small area had little crap. Cleaned everything. I checked all the springs I was able to on the side of the body valve.

I just found this yesterday so I will double check my selenoids: http://www.valvebodybuilders.com/chr...2_6_large.html

Glyn M Ruck

Mileage?

Suprazz

120 000 km so around 75 000 miles

Glyn M Ruck

OK so it's not very high mileage for a 722.6 if it has been regularly serviced. These transmissions can do a million Km's.

You are obviously happy working on the transmission yourself so that is great. We don't have to factor in huge labour costs. At the same time I don't want to waste your time.

If it was mine I would try fitting a new conductor plate with all the information you have given me. Check the solenoids & pray!. I'm pretty sure that this thing will come back to life. You must understand that it might not because we have no way of checking all the pressures on the valve body without a rig.

This has to be your choice.

Good luck!

Suprazz

thanks for your help!

I'll keep you updated

Suprazz

I just installed the new board.

Doesn't seems to help. But now I need to initialize the transmission module and I absolutely need a STAR interface because I'm in limp mode and cannot go over second gear.

Is there any way to initialize the transmission module without the star system?

Glyn M Ruck

No - You need to adapt with Star. I think you need to get this thing onto a Star for proper diagnosis or you are going to waste a lot of time & money. Adaption will either fix the problem or tell you what is wrong. Next step will be valve body if adaption does not fix.

Suprazz

it doesn't woked.

I'll buy an other transmission.

Suprazz

wow I'm so lucky with this car. The transmission I bought for 800$ is finally sold and the price is now 1000$

Suprazz

so I took the car to a automatic mechanic specialist to see if he was able to rebuild the valve body because he is doing that on dodge sprinters and he saids that seems to be a transmission problem. He needs to open the transmission to find the problem.

So I dont really have the choice to buy an used one, the rebuild is a way too expensive.

Suprazz

is a 722.600 from a 2000 c230 is interchangable with my 722.616.

It seem to be the same thing but is that ok?

Thanks

Glyn M Ruck

I would really try to find something a little newer.

Suprazz

ok

But except different gear ratio, will the transmission work with my ecu? I think not so what if I buy the transmission ecu also?

Now will my engine ecu recognise it?

Thanks

Suprazz

I called the Dealer and the guy told me that a 722.600 will work on my car. This is the not the right transmission but it will work..But I'm still not sure, I called an other dealer and he told me he cannot know that.

Glyn M Ruck

It will work on your car. I just think you should go newer.

Suprazz

is the 722.605 from a slk230 or c230 will work and is a better choice?

Because the 722.616 I find are just too expensive...

Glyn M Ruck

It does not really matter but newer boxes give less trouble. Go for the lowest mileage you can afford.

Good luck!

SkankZ

I've been dealing with this problem for about a year. It's really on and off. It's been about 5 months and it hasn't been stuck in limp mode where I have to reflash. The way i've been dealing with it is when it throws a CEL i will leave it alone for a couple days and after a successful turn on, the CEL will go away.

It only gets stuck when it goes into limp mode back to back after a restart. I've been thinking it can go on but thats not really safe.

i've been looking into 07 transmission since they seem to have it fix, despite johnand and karo had problems on their 07.

i'm sure this will work for my 06 c230 sport sedan?
http://www.ebay.com/itm/TRANSMISSION...item2a14790fe9

going to try and offer around 1,000. now the thing i've been debating after i fix it is keep it or sell/trade it because there's a possibility it might happen again 45,000 miles and fully loaded. i'm sure i can get 10,000-15,000 for it

samaritrey

You don't need a new trans dude get the codes it is probably the conductor plate as always

SkankZ

there's this. 5k miles, but 07 c280 4 matic awd?

http://www.ebay.com/itm/MERCEDES-BEN...item43a4fad5d9

didn't know if it would work

@sam: the code was a speed sensor ring P2767 sometimes 2768(transmission: limp home, speed sensor ring K1 error). i mean my indy said it would cost 800 just to open and find whats wrong. thought it be better to replace.

Suprazz

btw, this exactly describe my problem:
http://www.mercedesdismantlers.com//7226.html

So I don't need the transmission control module? Everything will work fine with my electronics