1994 GMC Van emissions fail

1994 GMC VAN
87,442 MILES • V8 • 2WD • AUTOMATIC
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MILTON CRAIN
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  • 1 POST
idle-fail HCppm=663 reading 220 standard CO% =3.39 reading 1.20 standard
Sep 15, 2010 at 2:26 PM
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RASMATAZ
  • ✓ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
Check the catalytic converter and the air injection pump
Sep 15, 2010 at 4:41 PM
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