gearbox probs

[mickl]

I think I know the answer to this already but I'm just hoping someone can suggest a more wallet friendly suggestion.

My gearbox was suffering from revs flaring which a fluid change mostly cured but driving the car today I noticed the gearbox not changing up or down and seemed to be stuck in a single gear...40mph was coming up at 4000rpm.

I suspect the gearbox is knackered and need replacing but can anyone suggest any other cures?

thanks

 

[Robbo]

MAS sensor? try disconnecting it and see if there are any changes.

 

[BlackC55]

It probably won't be an air mass sensor. Get the fault codes read. It may come up with a code. Remove the sump pan and check for any metal.
Try a valve body if there is no metal. They are available second hand. A new box may not be the solution.

 

[mickl]

It's booked into a specialist on Friday for a diagnostic test. Hopefully it'd not the 'box that's blown.

 

[W210 Fan]

Had the same the SEC, knackered box, pump on the back wears out when low on fluid according to gearbox bloke I used, on a C36 it might be worth reconditioning where as on mine it was easier to chuck another box in from ebay, stick an ad in the wanted/classified and see who can help, also look on ebay for people who break mercs which is were I found mine,

hope this helps, it is always horrible to suspect something expensive is broken

 

[ADY1983]

I think it would be best to look for a good one from breakers etc. if it is knackered as I got some prices to have my 4 speed reconditioned and it was about £1500 worth it I guess if you were to keep the car for a few more years...

 

[gchild]

Following this thread http://www.mbclub.co.uk/forums/showthread.php?t=36093 gearbox also diagnosed as the problem on my bro's car. Reconditioning the one he has was quoted at £900. He's keeping an eye and topping the oil for now...

 

[Will]

I think it would be best to look for a good one from breakers etc. if it is knackered as I got some prices to have my 4 speed reconditioned and it was about £1500 worth it I guess if you were to keep the car for a few more years...

Just for reference, I'm sure MB sell new gearboxes for less than £2k - possibly worthwhile if you were keeping the car for some time

Here http://www.mbclub.co.uk/forums/showthread.php?t=3084&highlight=auto - Alps' old thread - £1600 exchange, not bad IMO

Will

 

[ADY1983]

Just for reference, I'm sure MB sell new gearboxes for less than £2k - possibly worthwhile if you were keeping the car for some time

Here http://www.mbclub.co.uk/forums/showthread.php?t=3084&highlight=auto - Alps' old thread - £1600 exchange, not bad IMO

Will

Yeah defiantly worth doing if your keeping the car, but would MB still have a box for say my old 124??

That is very reasonable though, I have to say I'm usually surprised when getting prices from the dealer there really not that bad for price...

 

[BlackC55]

Yeah defiantly worth doing if your keeping the car, but would MB still have a box for say my old 124??

That is very reasonable though, I have to say I'm usually surprised when getting prices from the dealer there really not that bad for price...

They stock most parts for 124's including boxes

 

[vijilants]

If it is a 722.6 Gearbox, it is most probably the speed sensor / controller. This part is inside the sump and costs about £130 from mercs.

 

[mickl]

just to update.

a 'box rebuild wasn't required *pheeew!!*

turns out the solenoid sensor plate needed replacing and the pressure regulator spring was broken.

now all fixed and full throttle is on again! :bannana: :bannana:

 

[BlackC55]

Thankls for the solution.