c270 cdi gearbox noise

[tonic27]

hi guys, right here we go....... over the last few months this noise/vibration has got worse, when the car is cold the noise starts about 2200 revs and really is a strong vibration, when the car warms up it seems to go. however when the car gets really warm and at the same rev band i try to accelarate the revs go up and suddenly drop to about 2200. and this gives the impression that its a manual and im trying to keep it in a lower gear and use the torque.

if i then continue to press the pedal it eventually drops down a gear and goes like stink.

this is a very difficult one to describe sorry.

Paul

 

[television]

I would unplug the Maf first and try the car, the noise though is the mystery bit

 

[panason1c]

Valeo rad problem?......glycol mixed with tranny fluid?

 

[television]

Valeo rad problem?......glycol mixed with tranny fluid?

Could be 2 problems, I thought about the noise and vibration, but the pulling power should not be affected

 

[panason1c]

The reference to 'going like stink' sounds like a sudden downshift to me.............which might be a symptom of erratic behaviour due to contamination of the atf with glycol....

 

[tonic27]

thanks for the replys, i have had a glycol test done and no prob, the going like stink is yes when it eventually kicks down, but its does not do this until im pressing almost to kick down switch.

i think personally that it could be torque converter related, oil or machanical problems, forgot to add its 2005.

the fault is reallly hard to describe, when it does it its almost like its stuck in gear and been held back, ie no torque.......

Paul

 

[television]

thanks for the replys, i have had a glycol test done and no prob, the going like stink is yes when it eventually kicks down, but its does not do this until im pressing almost to kick down switch.

i think personally that it could be torque converter related, oil or machanical problems, forgot to add its 2005.

the fault is reallly hard to describe, when it does it its almost like its stuck in gear and been held back, ie no torque.......

Paul

I still think that it is a MAF fault and the gearbox does not know what to do

 

[panason1c]

I agree with television. (maf shouldnt cause a vibration though...)

 

[Blakey]

- It's easy enough to check the MAF, - if only to eliminate it as a possible cause.

Had a think about this overnight...

Could it also be turbo related? Problem with the actuator diaphragm? Causing the turbo to suddenly kick in?

Blocked Cat could cause noise around the gearbox tunnel?

Have you had the codes read?

 

[classic]

New to this forum/ C270 CDI Faulty manual gearbox

Hi to all users.

I have the following car and it requires a new gearbox. i'm struggling to find one for my car and i would be oblied if anyone could offer advise as to what i can do..... the car is still in the garage and they said that it will need a new gearbox.

I have literally contacted all the breakers yard including mercedes specialist and none of them have any in stock.

Mercedes C270 CDI Classic
51/2001 4 door saloon
6 speed/manual

I would be extremely obliged if anyone could offer useful adivse on how i can get the car back on the road without spending alot.


Thanks
Regards

Chris

 

[Alex Crow]

hello chris, could you tell us a little about the problems you have with the gearbox? then we can help advise.

 

[panason1c]

Hi to all users.

I have the following car and it requires a new gearbox. i'm struggling to find one for my car and i would be oblied if anyone could offer advise as to what i can do..... the car is still in the garage and they said that it will need a new gearbox.

I have literally contacted all the breakers yard including mercedes specialist and none of them have any in stock.

Mercedes C270 CDI Classic
51/2001 4 door saloon
6 speed/manual

I would be extremely obliged if anyone could offer useful adivse on how i can get the car back on the road without spending alot.


Thanks
Regards

Chris

Are these any good?............

http://cgi.ebay.co.uk/MERCEDES-C-CL...arts_Vehicles_CarParts_SM?hash=item4a9c0a5744

http://cgi.ebay.co.uk/MERCEDES-C-CL...arts_Vehicles_CarParts_SM?hash=item5ad3313960

 

[Steve@Avantgarde]

Where is the car currently and what are the symptoms of your issue? Maybe it doesnt need a box?

 

[mehmettosun]

c270 cdi gearbox problem

i have got a c 270 cdi automatic... i've heard problems about the gearbox of c270 cdi's... it started noise and make vibrations when gears changing... when i was climbing the mountain i kicked down then my car stopped...my gearbox blowed.... ... i asked to my mercedes service.. they teld me that u must change your gearbox.. then they changed my gearbox by 2000 euros but then my car accelerate more quickly then the older gearbox.. now i'm happy with my new gearbox because my car is more quick than the old time...

 

[oigle]

hi guys, right here we go....... over the last few months this noise/vibration has got worse, when the car is cold the noise starts about 2200 revs and really is a strong vibration, when the car warms up it seems to go. however when the car gets really warm and at the same rev band i try to accelarate the revs go up and suddenly drop to about 2200. and this gives the impression that its a manual and im trying to keep it in a lower gear and use the torque.

if i then continue to press the pedal it eventually drops down a gear and goes like stink.

this is a very difficult one to describe sorry.

Paul

I would suggest that the vibration could be down to engine mounts. These 270 engines are quite "vibraty" and old mounts can and do transfer lots of NVH.