2001 Chevy Astro cylinder 6 misfire code

2001 CHEVROLET ASTRO
110,000 MILES • 6 CYL • 2WD • AUTOMATIC
Avatar
BLAZEONE
  • MEMBER
  • 2 POSTS
new distributor ,wires,plugs, runs fine but keeps setting code for misfire
Feb 12, 2009 at 7:16 AM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
Advertisement
Avatar
JDL
  • CAR REPAIR CONTRIBUTOR
  • 16,098 POSTS
What was the code? A P0300 is a random missfire, it may be a problem that is common to all cylinders. If the codes is cylinder specific, that's where you start looking. A misfire can be caused by fuel--spark--compression, just about anything.
Feb 12, 2009 at 7:32 AM
Advertisement
Avatar
BLAZEONE
  • MEMBER
  • 2 POSTS
p 300 and 101 mafs
Feb 12, 2009 at 8:02 AM
Avatar
JDL
  • CAR REPAIR CONTRIBUTOR
  • 16,098 POSTS
Can you check the circuits at the maf sensor? Pink wire is voltage with the key on, black wire is ground, yellow wire is signal, the signal should change with air flow. You could try the tap test, see if the signal changes.
Feb 12, 2009 at 9:39 AM