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Lowering Emissions

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Old Nov 5, 2008 | 08:05 PM
  #1  
1992JeepCherokee4x4's Avatar
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Default Lowering Emissions

My jeep failed inspection. The inspection facility said the emissions were too high. Whats a cheap fix?
Thanks for your help
I live in NJ
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Old Nov 5, 2008 | 08:09 PM
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5spd-XJ's Avatar
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From: Illinois
Year: 2000
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Which emissions were too high, are there any DTC's set??? They either should have told you or gave you a print out
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Old Nov 5, 2008 | 08:34 PM
  #3  
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Year: 1989
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I live in California, and we have smog checks.
Right before I have my '89 XJ (w/ 180+K Mi.) tested, I replace the air filter element and give the engine a tune-up...but most importantly, I have the oil changed IMMEDIATELY before the test...yes, at the Oil Changers a block away from the smog test place.
HTH!
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Old Nov 5, 2008 | 08:38 PM
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5spd-XJ's Avatar
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From: Illinois
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That doesn't help me too much, did they give you a readout on the gasses and what the reading were in ppm (parts per million) or whichever measurement they use? ex. If your HC (hydrocarbons) are too high, that will indicate a misfire and/or an extremely rich running condition.
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Old Nov 5, 2008 | 08:44 PM
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120mm's Avatar
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Year: 95
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Originally Posted by 1992JeepCherokee4x4
I live in NJ
I think I found your problem, right there....

Just kidding....
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Old Nov 5, 2008 | 08:49 PM
  #6  
c-loss's Avatar
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Year: 1988
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Engine: 4.0
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make sure your cat and your o2 sensor are both good. and then before you take it in make sure the jeep is fully warmed up.
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