1995 Jeep Cherokee smog check failure

1995 JEEP CHEROKEE
14,000 MILES • 6 CYL • 4WD • AUTOMATIC
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ERINCLC
  • MEMBER
  • 2 POSTS
My car didn't pass smog for two reasons. One is the gas cap needs to be replaced, also they said that the NO (part of the emissions) were 1440 when the max is 505... what could this be and what kind of repair would be needed.
Dec 12, 2008 at 5:49 PM
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BMRFIXIT
  • CAR REPAIR CONTRIBUTOR
  • 19,053 POSTS
If its the HC that is very high I would suggest checking it for tune up and check O2 sensors
if the NOX that is high check EGR operation
remove clean and check vacuum lines
Dec 13, 2008 at 10:09 PM
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