You can get a refurbished one for about $70. See: http://lmgtfy.com/?q=toyota+echo+mass+airflow+sensor
31manifold and/or airflow meter sensor signal circuit--airflow meter/circuit--manifold pressure sensor/circuit--ecu
its part of the mass airflow sensor screwed into the airbox assembly.
It is inside the Mass Airflow Sensor (MAF sensor), IN OTHERS WORDS IS PART OF THIS.
5x114.4
its part of the mass airflow sensor bolted to the airbox.
248km/h
It does not have a mass airflow sensor.It does not have a mass airflow sensor.
It does not have a mass airflow sensor.It does not have a mass airflow sensor.
It does not use a mass airflow sensor.It does not use a mass airflow sensor.
1990 TOYOTAS HAVE VANE AIRFLOW METERS
The mass airflow sensor is located on top of the airbox (air filter housing). It has a plug with maybe 6 wires in it and is held in place with 2 Phillips head screws.