On the 6 cylinder it is right behind the air filter box, where the tube inserts in to the box. There are two Philip screws and the wiring clip. you can't miss it as soon as the hood is open.
Be careful cleaning it (alcohol / Q-tip or elec. connection spray) as it can be fragile. K&N filters or any filter that is oiled can dirty it up and cause issues, so clean it first before replacing it.
Its located on the drivers side of the engine bay. The air intake is attached to the MAF
It does not have a maf sensor.
The MAF sensor is located right before your breather box is for your intake air filter. Its a little square box with wires and a harness going to it. You'll see 2 screws holding it in place.
I4 does not have MAF.
the 1999 Toyota corolla does not use a maf but it uses a MAP sensor located somewhere around the intke manifold
check for tune-up, check maf sensor, check o2 sensors, do a fuel system service.
its attached to the MAF sensor in the intake
No it does not have a MAF it has MAP
It should in the air filter box or if you have a MAF sensor, the intake air temperature sensor is a part of the MAF.
It's built into the MAF
It does not have a mass airflow sensor.
It is inside the Mass Airflow Sensor (MAF sensor), IN OTHERS WORDS IS PART OF THIS.