1996 merc e200 auto tranny slipping

[kizersozey]

Hi all, i hope someone can help me with my poor e200,.

My auto box is slipping in mid 3rd gear, but in position 2nd or 3rd all works well, But when i start in position D, 1st 2nd 3rd fine but before 4th it slips, im sure its slipping in mid 3rd gear as i have pushed it hard and she changes to 4th,,,,, ive changed filter and oil and gears are certanly smoother......

Can any help before i go looking for new gearbox. is there any adjustment which can be done? or something. im not a merc expert at all.

 

[turbopete]

welcome to the forum! my first thought, as with all auto box problems is is the oil level ok and more importantly, has the oil and filter in the gearbox been changed recently? an oil and filter change has been known to cure many auto box faults!

 

[kizersozey]

yes the level is ok and full of new oil and mb filter also fitted, Its a wee bit low on dip stick when engine running warm!!!!

 

[Cole@MBS]

That wont hurt being a tad below, have you had any fault codes read????

 

[kizersozey]

no not yet yet, but a merc specialist is keen to change the box as he has one spare from a e200 he scrapped.....................he never hooked it up to a dianostics machine, just said ah well yur belts are worn and ive a box er for 400 euro and 240 euro to fit.........

should i just get it done or investigate mine deeper?

 

[Cole@MBS]

Thats up to you, sounds cheap! as long as it sorts the problem out then go for it!!!

For that price its prob the cheapest way!

 

[kizersozey]

true yeah, but should i get anything else checked,,, is there any adjustment on these boxes....just to let you know if its important mines an advantgarde merc.

 

[Cole@MBS]

true yeah, but should i get anything else checked,,, is there any adjustment on these boxes....just to let you know if its important mines an advantgarde merc.

Makes no difference!

 

[kizersozey]

is there any adjustment on those? another machanic said older ones could be tweaked abit

 

[Cole@MBS]

Not as far i remember, im thinking it a 7226 box, if right then no, could be wrong tho!!

 

[kizersozey]

not sure myself but tanx alot for your help.............think ill pull out the box and get replacement, a crowd in uk called prestige have one and its 230 pounds b4 postage but they garrantee it for 90days,

 

[kizersozey]

the box no is 202270000072242103775847. found this stamped on drivers side of box above pan

 

[kizersozey]

the number i found on drivers side of box above pan is 202270000072242103775847,,,does this mean its a 7224 box?

I was in touch with prestige in uk and he checked my chassis num against a box he has, and its ideal he say's. price 230 before shipment charge, but its garanteed for 3 mths..

 

[Number_Cruncher]

>>7224210

This means that to slip in 4th, it must be a clutch which is slipping rather than a band. It's academic, as neither clutches or bands are adjustable on 722.4 gearboxes.

One other thing to check before removing the gearbox is that the vacuum system is correctly assembled.

 

[Cole@MBS]

Looks good, and cheap, only looking it up on EPC would be the only correct way of checking!!

 

[kizersozey]

can you advise me as how to check vacum system please, new to me this stuff (mercs) used to have bmw's, im machanically minded as my father is in the trade but holds his hands up to this, just a few guided steps for me to check would be much appreciated.

 

[Cole@MBS]

I will let N/C take over here!! getting so many pm.s i have to take care off!!

 

[kizersozey]

thanks again

 

[Number_Cruncher]

The quick way to check is to disconnect and plug the vacuum line to the modulator valve. The gearshifts should become hammer hard, and, if the slipping goes, it may mean that either sorting the vacuum piping out, or adjusting the modulator pressure will help.

If, however, you still get slip with the vac pipe off and plugged, then, you *know* the fault is inside the gearbox.

 

[kizersozey]

great tanx a million, which side is the vacum line on? sorry for all the questions