Viano erractic rev counter with shudder

[PITT90]

Hi All

As i am new to the site, could someone please give me some advice, I have a 2008 Viano 3litre v6 diesel auto, after travelling for roughly 2 miles the rev counter will jump about 200 revs and a rumbling noise and a vibration will occur, the vehicle will do this while under acceleration / in cruise only, down hill it does not happen (coasting), I have fitted a new maf sensor (bosche) and Map sensor, as the mercedes diagnostic came back as these were the faults, this has not cured the problem, mercedes also said there was a hole in my intercooler, although the vehicle is not loosing any coolant, any advice would be greatly appreciated.

 

[zenman63]

Hi All

As i am new to the site, could someone please give me some advice, I have a 2008 Viano 3litre v6 diesel auto, after travelling for roughly 2 miles the rev counter will jump about 200 revs and a rumbling noise and a vibration will occur, the vehicle will do this while under acceleration / in cruise only, down hill it does not happen (coasting), I have fitted a new maf sensor (bosche) and Map sensor, as the mercedes diagnostic came back as these were the faults, this has not cured the problem, mercedes also said there was a hole in my intercooler, although the vehicle is not loosing any coolant, any advice would be greatly appreciated.

Sounds like a gear box problem or torque converter.
Get the box serviced and see what the oil is like.


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[wu56Shoozz]

Also get the Intercooler replaced - its not that expensive. You won't loose coolant through the intercooler but you will loose oil!