[TheUsualGuy]

thank you, but this is not the case for most of us. my coolant level is ok, but I have this problem still.

@pablo_can Hopefully you'll find the issue soon then.

 

[mpkFIN]

Where is PURGE VALVE or what ever is that thing what makes ticking, stop for moment and starts again, lot more silent after cleaning that intake bridge valve but thinking that is related to acceleration vibration, because vibration wont come in every acceleration, or maybe it could be dirty fuel nozzle, by the way i have B170 and spark plugs, filters, oils and both shafts and one front bearing is changed.

 

[forrera]

Where is PURGE VALVE or what ever is that thing what makes ticking, stop for moment and starts again, lot more silent after cleaning that intake bridge valve but thinking that is related to acceleration vibration, because vibration wont come in every acceleration, or maybe it could be dirty fuel nozzle, by the way i have B170 and spark plugs, filters, oils and both shafts and one front bearing is changed.

The purge valve is on the inlet manifold, hiding behind the air filter box.
If your car is automatic may be you should check the CVT fluid level.
Vibration on acceleration on B class sometimes is caused by the transmission, not drive shafts.

 

[mpkFIN]

The purge valve is on the inlet manifold, hiding behind the air filter box.
If your car is automatic may be you should check the CVT fluid level.
Vibration on acceleration on B class sometimes is caused by the transmission, not drive shafts.

I have manual, forget to mention, but i will check purge valve and hoses, thinking could air leak in there be reason for vibration.

 

[mpkFIN]

Finally got rear engine mounts chacged, wobbling after speed bumbs are gone, ride is smoother and havent notice vibration, at least i belive now my problems is fixed, old mounts seemed ok, but huge difference with new ones.

 

[mpkFIN]

Feeling frustrared, vibrations are still there, not all the time but still about 2 of 3 hill climbs gives vibration, but now its not so bad. I have noted that the purge valve is ticking alot, could be crack somewhere in its hose, maybe, how often should purge valve be operating?

 

[DEVOURS]

Don't really know as you haven't filled in your profile yet....this helps all members here.

..
Please complete your BW registration. ===> user CP profile
====>
click on your icon----> click on Account Settings---->
goto Account Details----> add vehicle details---->
ADD your make model YEAR ----> click save.

Reactions:Hey Hoser

 

[DEVOURS]

Thanks for the requested info and hope that someone can answer the purge valve question.

 

[bs0606]

Hello I have changed both driveshafts and i just installed a brand new cvt gearbox. The wombling at acceleration from 20 to 90km still remains but with smaller left to right duration now. But its not from the gearbox since its new. So now i will try the new sparkplug wires since the sparks are new. I will update further.

 

[forrera]

Hello I have changed both driveshafts and i just installed a brand new cvt gearbox. The wombling at acceleration from 20 to 90km still remains but with smaller left to right duration now. But its not from the gearbox since its new. So now i will try the new sparkplug wires since the sparks are new. I will update further.

Have you replaced the control unit with the gearbox?

 

[bs0606]

Hello again
The entire control unit "vavle-plate-ecu" unit was replaced with genuine brand new Mercedes unit (2500 EUR)
The gearbox was totally overhauled by Mercedes CVT gearbox repair partner at 2500 EUR
They said to drive the car for 3000km and then see how it goes
So far at 2000km the shaking/wombling is almost gone and sometimes in heavy load acceleration there is a shaking-wombling feel on the car body from 40 to 90 km/h and after 100km/h is butter smooth.
If you are not full throttle acceleration from 0-100km/h its smooth too.
Only if you press hard with load you feel a chassis shaking vibration especially on 50 to 95km/h
But again its a vibration now and not the left to right front end shaking that had before
I will update further when I pass the 3000km that Mercedes asked to do and the we will reevaluate the situation.
I will update further

 

[bs0606]

By the way my car is a 2007 B200 Turbo with 170.000km
Both driveshafts are changed with the transmission overhaul too

 

[DEVOURS]

Why not just complete your profile ?..and please add your country in the "country location " and hit save..


If you could do all the potential readers a favor,
Please complete your BW registration profile so members may better assist you, seeing and knowing what you drive.

Goto your ===> user CP profile====> click on your icon (top right corner of the webpage) ----> then click on "Account Settings"----> goto Account Details----> add vehicle details---->
ADD your make model YEAR (i.e. 01 ml320) into your Profile ----> (MUST) click save at the bottom of that page.

YOUR vehicle info will then show/display under your username & avatar (on the left side) once it is completed. If it doesn't display under your Avatar, it wasn't saved.
Members will then see your avatar car info & know what you drive if replying.

Good luck !