problem automatic transmission

[dom86]

hi I have a mercedes and w211 270 the car in the diagnosis nn has no dtc for? the car changes gears to a regime rpm too high

[baraldino]

First Check the ****llo oil

[dom86]

already done the oil ? to ****llo

[maxsek]

as you don't change the oil??

[giuseppe1374]

change gears at high speed or in search of the slip type clutch

[Mr.Flash]

not ? a question irrelevant, but since you don't ? the specified state: not ? that ? pressing the sport button ?

[blackwolf76]

Disassemble the oil sump of the transmission, then replace the oil with ATF3 and what more? also important is the filter mounted in the oil pan. From the spare parts kit is located pan gasket and oil filter at about 20 euros.

[dom86]

the oil have replaced 6 months ago in mercedes the car nn displaced change gears at high speed since if put to comfort the customer complains about this kind of problem is really the car to change the style of a gasoline

[Mr.Flash]

not ? mica was remapped the ecu for the engine and transmission ?

[ugoboss]

it can be a problem in the converter or the pump.

[sergiot]

if it was mapped, even only the engine control unit, some of the changes (map pedal) may affect the shift point .

[granderobocop]

hi you have to if you noticed if the connector on the exchange rate and wet gear oil the same?

[dom86]

no the ecu ? the original nn the still-mapped I wanted but the customer nn wants to x this problem

[sergiot]

you should also clarify one thing: this fact of change is too high, that is, or ? always been so??
you are observing this behavior why? you don't like or why? the signals as a failure?

[dom86]

I have to say the truth? ? the customer ke complains about this disorder xk? x is fine with me, and he says ke before the car changed to a regimen pi? low honestly ? a little high xk? the car I tried to speed? modica ? change well if you push the car even seems to ke the gear remains regressa ? salt d laps

[blackwolf76]

That drive change at about 2500 rpm with normal driving, while under the request accelerator also changes over 4000...

If the work falls within those parameters, I would say that ? normal the gearbox.

[ugoboss]

That drive change at about 2500 rpm with normal driving, while under the request accelerator also changes over 4000...

If the work falls within those parameters, I would say that ? normal the gearbox.

it is exactly as it says blackwolf76 , make a test you put in a straight road, and the parts by putting the car at 2500 rpm, if the exchange goes well, you should put all of the gears remaining in that regime.

[dom86]

guys I've done several tests, but the change I noticed ke is cold ke hot nn change under 3000 what do you advise me to do? they told me ke x replace the gear oil c wants a coffee special ke sends the oloio cn pressure inside ke I nn I c'? a method x to be able to change without the use of such a contraption??? some of my colleagues say ke ec ki if the built have no idea d as functions? sorry nn sn a genius cn and automatic transmission

[ugoboss]

guys I've done several tests, but the change I noticed ke is cold ke hot nn change under 3000 what do you advise me to do? they told me ke x replace the gear oil c wants a coffee special ke sends the oloio cn pressure inside ke I nn I c'? a method x to be able to change without the use of such a contraption??? some of my colleagues say ke ec ki if the built have no idea d as functions? sorry nn sn a genius cn and automatic transmission

my dispassionate advice and letting loose and contact the people with the equipment and expertise on the automatic transmission, because to do damage and for a moment, and after they are in pain.

[baraldino]

I replace even without specific equipment, but when you have problems, first drain the oil in the cup (where possible) and check that there are too many residues
often going to substitute the oil in the condition worsens the situation and throw only money
if the conditions allow it, I put an additive in the dry and I take a walk of about twenty minutes, then drain the oil and check to see how it comes out
sost filter
I place a deal? of oil equal to the one previously removed (1/2 liter more)
Detach the hose that comes from the heat exchanger and returns the oil to the transmission I put in motion, and discharge to the max 2 lt and off (operation to be performed in 2)
Refill and repeat until it comes out just clean oil.
by doing so you can sost all the oil of the transmission including the torque converter
but I agree with Ugoboss to go over ? better to rely on experts

I forgot
Very important to check the ****llo gearbox oil at the required temperature and use oil that conforms

[dom86]

thanks baraldino your system ? very useful, I will try to do cm you've described thanks again