Is there any possibilty of cleaning MAF sensor ?
Answer There is no way to clean the sensor it is sealed, the engine is obviously running way too rich, by disconnecting it you are removing the input signal to the ecu and somehow it sees this as an indication to lean the mixture somewhat, you can try changing the sensor but I think the problem is elsewhere, basically, too much fuel and not enough air,this could be caused by a restriction in the intake air system, a leaking fuel injector, a bad fuel pressure regulator or even a failing ecu.