mass air flow sensor problems ford focus

This is the most expensive possibility but normally a faulty PCM will be doing more than just misreading the air temperature. The air cleaner assembly is removed from the vehicle with the mass air flow sensor and air intake tube attached.

Ford Focus Mass Airflow Sensor Location And Removal Youtube

Remove the air cleaner assembly.

. Certain Ford models equipped with the PowerShift dual-clutch automatic transmission such as Ford Fiesta and Ford Focus have issues such as erratic shifting transmission drops in neutral or lack of atransmission problems are caused due to low transmission fluid. A defective mass air flow sensor. However with the right supporting equipment the Wide-Band sensor can be used for adjusting airfuel mixture on any engine.

Disconnect the mass air flow sensor electrical connector and wire harness retainer from the air cleaner assembly. This is less common but it can cause your car to try to draw too much air which can be the root cause of an overheated air intake. We all know that perfect combustion requires an airfuel ratio of approximately 1471 by weight.

Most Ford automatic transmission problems are caused due to low transmission fluid. Disconnect the EVAP hose from the air. Because the signal varies in strength and also in current flow direction polarity its impossible to directly view the signal with anything except an oscilloscope.

Remove the two bolts.

7 Symptoms Of A Bad Mass Air Flow Sensor