Hello everybody, nice to write here, because if i am interested in something about MB, here is always the answer. I just bought ML 320 2002y, with 90,000, never been damaged or something like this, also never had a serios problem according to CARFAX. it runs very well, without any additional noise, i had 99 model and there is a real difference between comfort, new one runs more softly. Now i noticed that it doesnt have acceleration as another ML 320 01-02, i replaced spurk plugs, air filter, did diagnostic and there were not any problem. i tested and to reach 60mph it need more than 11 seconds, 11,3-11,8. can it been coused by fuel filter? and from the exhaust system i think there is more sound than the others have, does it have catalist in the exhaust system which can be soiled? and i think that fuel consuption is mere than usual ML 320 has. all sensors and air flow works great.

 

It could be many reasons but a faulty 'maf' might be one of them?

 

every sensor and maf also work great, i did diagnostic yesterday and there was not any problem with electricity, no probmel on the engine, abs and airbag computers are working great also.

 

maf faults dont always throw up a code.