how do you test mass air flow sensor

2002 FORD EDGE
137,000 MILES • 6 CYL • 2WD • AUTOMATIC
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JUGGERNAUT615
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  • 24 POSTS
how can you test a mass air flow sensor?
how can you test an O2 sensor?
how can you test a MAP sensor?
Feb 28, 2011 at 4:57 PM
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FIXITMR
  • ✓Experienced Mechanic
  • 9,990 POSTS
unplug them.
Feb 28, 2011 at 5:21 PM
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JUGGERNAUT615
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what will that do please explain further . I was under the impression that if i unplug the MAF sensor car would not operate.
Feb 28, 2011 at 5:26 PM
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FIXITMR
  • ✓Experienced Mechanic
  • 9,990 POSTS
1 way to find out.
Feb 28, 2011 at 7:40 PM
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JUGGERNAUT615
  • MEMBER
  • 24 POSTS
ok i did as you suggested and disconnected the mass air flow sensor and it was acting much worse which leads me to believe it is working.should i do the same with the o2 sensors 1 at a time to see if unplugging 1 has no change and assume that it is not functioning?
Mar 1, 2011 at 4:04 PM
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