1995 Plymouth Voyager emissions failed....

1995 PLYMOUTH VOYAGER
252,000 MILES • 6 CYL • FWD • AUTOMATIC
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SPEEDSHOP
  • MEMBER
  • 4 POSTS
Can you folks decipher this emissions report results
(limit/actual reading):

IDLE (800rpm)
HCppm........ 200/90 pass
CO%.......... 1.00/1.02 fail
NOppm....... n/a n/a

FAST (1300rpm)
HCppm...... 54/56 fail
CO%........ .30/.04 pass
NOppm...... 757/256 pass

It was so close to passing. Seafoam treated, new plug wires, 6mos old plugs, diaelectric grease, new air filter, oil change 10w-30, gas antifreeze w/91 octane, shrouded pipe leading to cat, new pcv valve. Did I miss something? Based on the results, what could it be? Help!
Apr 15, 2008 at 11:11 PM
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BMRFIXIT
  • ✓ASE Certified Mechanic
  • 19,053 POSTS
  • ASE Certified Mechanic
oxygen sensors give it a check
Apr 18, 2008 at 10:23 PM
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