sidekick stuttering?..HELP!

My '95 sidekick started stuttering today when i press the gas, if i try to stay at the same speed my car stutters the whole time, its hard to get going. It seems like its trying to go but doesn't want to. what could the problem be ?

This is likely due to a faulty mass airflow sensor (MAF).
Another possibility is loss of pressure at intake/plenum (before the air goes inside the engine cylinders)