hi everyone,it is true if you disconect the maf sensor and you feel the car run a lot better,that mean the maf sensor is bad or this is a mith,i hear a mechanic said that but i dont know :puzzled:

Hi,got this off Brickboard for you. Before you condemn the MAFF give it a clean with electrical contact spray as this usually sorts it out.


Hesitation: Poor Driveability: Bad Air Mass Meter Symptoms.
Limp-Home Mode:

[Would someone give me give me a description of what a bad AMM feels like?] My single experience with a bad AMM was that the engine Air Mass Meterwould barely run at all and was not driveable. I think it reverts to limp home mode if you pull the connector off. But I still think you should clean the throttle body. Since the purpose of an AMM is to regulate air flow to the throttle body, it usually sits right on top of the air cleaner or close by and there is some sort of connector on it. Remove the connector and see how your engine runs. It should run like crap, i.e. no power, idle fluctuates wildly, or engine stalls. If this is similar to the problems you're experiencing now, chances are that the AMM is bad. Another thing to check is that there aren't any air leaks between your AMM and the throttle body.

My personal experience with one of these was on my old 240.......car progressively ran worst, lack of power, hard start, etc...until it just quite all together.....unplugged the AMM and the car ran ...not good but ran good enough to get me home.....installed a new AMM and that fixed it. FYI....it does not regulate air flow to the throttle body but, as the name implies...."air mass meter" ..it measures the mass of the air flowing and gives this information to the other systems to adjust fuel, etc.