Mass air flow sensor-How do you tell if it's bad-2001 le pathfinder 3.5 litr code 172-171


Asked by Sep 24, 2013 at 05:37 PM about the 2001 Nissan Pathfinder LE

Question type: Maintenance & Repair

3 Answers

Robert Lavallee

Unless you have a scanner that'll do data or have a tester mass airflow meter you can't tell. Is it running badly??

1 out of 1 people think this is helpful.

No it runs tip top

Robert Lavallee

mass airflow failure should make it run rough unless it's totally failed. start it and once it's warm unplug the mass airflow while it's running and see if it stalls or stumbles. that'll tell you if it's running without it or not. if it's failed it won't change when you unplug it cause it'll already be running without it. if it's good it'll stall or stumble when u unplug it.

1 out of 1 people think this is helpful.

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