Where is the Mass Air Flow Sensor?

try unplugging mass air flow sensor its located on air duct near air filter see if that changes condition if so replace sensor

what about the fuel filter

An O2 sensor problem will not cause any drive related symptom. I would look at the Mass Air flow sensor and have the fuel pressure checked under a load to make sure it is within specs.

Is the check engine light on.. If so lets get the codes and go from there. Autozone provide this as a free sevrice. and they also rent the tool . It could be many things mass air flow sensor ,, Throttle body..Good luck!!!

Hi:
The mass air flow sensor is a round sensor that is mounted in the air intake, between the air cleaner box and the engine throttle body.

the mass air flow sensor is located under the top plastic engine cover. to remove this un screw the oil filler tube by hand and remove the top cover. its just to the right of center engine. unplug this sensor. next it has two screws to take this off. It is not standard screws so look at it. remove them and replace sensor. After install go to autozone and have the warning code removed. This is done free. 2000 buick lesabre

It could be a dirty air filter a, spark plug, spark plug wires.
a leak in the air intake system or the mass air flow sensor

The M.A.S. is in the top of the metal tube between the air filter box and the intake manifold. It will have a wire connected to it and it is held in by 2 screws. This is an easy replacement and should take no more than 5 to 10 minutes, assuming you are taking your time.

sound like the mass air flow sensor is dirty. take it off and clean with mass air flow cleaner and let it dry before putting it back in and try. it should be located in the air intake hose or the throttle body. also could be map sensor.