NISSAN Pictures of how I removed and cleaned the Mass Air Flow Sensor on my 87-95 Nissan Pathfinder.

I removed the Mass Air Flow sensor and cleaned the sensor wires. It was super easy. It took about 15 minutes. Did it really help? I don't know. Maybe.

I had been getting some rough idle on startup. Some smart guys on the Nissan 4x4 forum said to clean the MAF. I was nervous to try it for a long time because they worried about breaking those "tiny little wires," and I couldn't find any good pictures of it. So I took pictures while I did it to help the next guy.
But first, lets pay some bills:

  1. The Mass Air Flow Sensor is between the Air Filer and the Intake Manifold on the drivers side of the engine.
    Pathfinder Engine Compartment MAF location

  2. The Mass Air Flow sensor is just past the Air Filer Box.
    Pathfinder Air Box

  3. There's the MAF and the electrical connection.
    Mass Airr Flow Sensor Electrical Connection

  4. I used my smallest needle nosed pliers to remove this little retaining clip from the Mass Air Flow sensor electircal connection.
    Pathfinder Mass Air Flow Sensor Remove Electrical Connection

  5. The clip came off the MAF plug.
    Pathfinder Mass Air Flow Sensor Remove Electrical Connection

  6. And I removed the MAF plug.
    Pathfinder Mass Air Flow Sensor Remove Electrical Connection

  7. I not too gently removed the dirt with a copper wire brush.
    Pathfinder Mass Air Flow Sensor Clean Wire Brush

  8. I removed the screws from the Mass Air Flow Sensor.
    Pathfinder Mass Air Flow Sensor Remove Sensor Wires

  9. I Removed the MAF.
    Pathfinder Mass Air Flow Sensor Remove Heated Wires

  10. There are those 2 little wires in the MAF. It looks like each has a little resistor or something on it. Check out all the sand that made its way into the MAF body.
    Pathfinder Mass Air Flow Sensor Wires

  11. I wasn't that gentle.
    Pathfinder Mass Air Flow Sensor Wires Cleaning

  12. Radio Shack compressed air, Q-Tips, Rubbing Alcohol.
    Pathfinder Mass Air Flow Sensor Wires Cleaning

  13. I used 2 Q-Tips. You can see the dirt that came off.
    Pathfinder Mass Air Flow Sensor Wires Cleaning

  14. I put the clip on just a little bit, then I installed the plug, then I pushed the clip in the rest of the way.
    Pathfinder Mass Air Flow Sensor Install

  15. Next I sold out to make 02ยข so I can fulfill my lifelong dream of owning a 1986 944 with blown head gaskets.

    But no minivans!

  16. Then I finished my beer.

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Last modified: 11/22/2014