Misfire

2000 CHEVROLET ASTRO
138,000 MILES • 4.3L • 6 CYL • 2WD
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FREDDY GARVEN
  • MEMBER
  • 1 POST
Po300. What is my ideal reading supposed to be for my MAF sensor? I am just wondering. Currently it is at 0.012 area while driving.
Changed cap, rotor, plugs, wires, distributor. Cannot seem to find a vacuum leak. Never did compression test.
Motor runs fine once in awhile. When at speed and a slight incline shed start acting up.
Nov 13, 2017 at 5:39 AM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,236 POSTS
On average, at an idle you should see between .5 and .8. Wide open throttle should be between 4 and 5 volts. The reading you mentioned seems very low if you get it when driving.
Nov 13, 2017 at 10:04 AM
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