1990 Mazda 626 MASS AIRFLOW SENSOR

I'm not sure what the issue is. If the mass air flow sensor has been diagnosed as defective, you can order one for your specific application and replace it yourself. Thank you for listing the engine size. Be aware there are two different 2.2L engines. One uses a turbocharger. Most likely the mass air flow sensor is the same for both applications, but if your engine uses a MAP sensor too, that will be different. That sensor measures intake manifold vacuum, and with a turbo, the intake can go into a pressure situation. The MAP sensor has to be able to measure that too.

The main thing to watch out for when replacing the mass air flow sensor is there can't be any air leaks between it and the throttle body. If any air sneaks in that doesn't go through the sensor. it won't get measured, so no fuel will be commanded to go with it.

The problem is: the car can start,work at gear one ,but it wont run well at gear two or three and above. At times, it stops completely.I just changed the fuel pump and tested it with a mechanic.

I could have changed it(MAF) myself, but our Nigerian road side mechanics have their own theories.The theory now is: i must probably test like three or four and above before i can get the one that can work with my car,even if it is the same make and specification of the one removed from it.

I was just baffled by their claim and submission.So, i need clarifications on that,pls.

What I meant was I don't know what the issue is with your mechanics. The Engine Computer will learn the characteristics of the new sensor. All you have to worry about is the sensor must be the correct part number for your car's year, model, engine size, and other options.

Thank you so much for the valuable information.Can you help with the MAF Sensor for this specification:

engine:2.2 L(non-turbocharger)
make: mazda 626
year:1990
.
Thank you

I don't know what you have for auto parts stores. Here in the U.S. we have Carquest, Auto Zone, Advance Auto, NAPA, and O'Reilly Auto. those are the big ones. I found your mass air flow sensor on O'Reilly's web site for $190.00. They want your old one traded in.

Thank you so much. i will get back to you soon.Have a nice
day

Good day,Sir,

i bough the VAF and installed all to discovered that my engine did not get fuel from the pump. On finding out, i discovered that my pump was not getting power from the battery

WHAT MY BE WRONG ,PLS?

The fuel pump must never have voltage with just the ignition switch turned on. If it did, that would pose a serious fire hazard if a fuel line got ruptured in a crash. You need to check for voltage to the pump while a helper is cranking the engine.

thank you so much.I would have sent the old VAF to you, but it is difficult to do here in Nigeria.thanks once again,Ben