Have a 91 nissan terrano r3m, is this model dont have a mass air flow sensor?

SOURCE: problem with engine ligt on

Its located on the air cleaner box (the box where your air filter is) Its had cylindrical shape and kinds square on the top its black in color and had a plug on it. There is rubber intake hose connected to it. Good luck and thanks for using Fix-ya

SOURCE: problem with engine ligt on

Below I have drawn an arrow to the location of your mass airflow sensor.

If this isn't the same as your engine, just let me know which engine you have and I will have another image for you ASAP.




Also please take a moment and rate my solution to your issue,

Thanks.

SOURCE: nissan terrano accelerator button, whats it do??

this is the kick down for the auto trans it kicks back a gear on acceleration

SOURCE: mass air flow sensor

maf sensors identify the amount of air flow flowing in the intake. the sensor works with the throttle so it knows how much air is coming in to add the proper amount of fuel to mix with the air. Easy to pull and replace.

SOURCE: 000 NISSAN Xterra -- after warming up, loses RPM by 500-1000..... have replaced ignition wires and distributor, checked mass air flow sensor and OK.....

I had a problem on my Nissan Xterra 2000. Symptons sound similar. In my case, it ran fine for a while and then suddenly the engine starts to stumble and lose output. At one point it did not even have enough HP to move. Irregular idling too. Thought it was water in my fuel. Bought water remover from the store and added to gas tank. Problem did not go away. Instead, "Service Engine Soon" light came on. Had to have it towed to the dealer as there was no way the engine could keep up with traffic. Dealer replaced the "Crank Position Sensor" today. Parts $33.00, Labor: $300 (about 3 hrs worth of work). Seems to work fine now but I will wait and see. Dealer also stated that Distributor bearing appears to be noisy and will need to be replaced sooner or later. I will wait for it to go before I fix that.