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Old 05-06-2010, 10:29 AM
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Default 97 FZJ80 epic fail on emissions

Amber just went to get emissions on her 1997 80 and failed miserably. Bad gas cap and I think she said that CO2 was supposed to be something like 15 and hers was 181. There is a check engine light that I think is O2 sensors. Will replace those, but ARGH! Oh Mr. Robbie, expect a PM and email soon.

T
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Old 05-06-2010, 10:33 AM
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Bummer, man, just went through this myself. here's the saga: http://www.risingsun4x4club.org/foru...fail+emissions
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Old 05-06-2010, 05:22 PM
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ok...so HC limit is 1.2 and she got 6.36

CO limit is 15 and she got 181.05?!?!?!?

nox was only 1.07



Could the check engine light (for o2 sensor last I checked) plus some old gas (been sitting for a couple of weeks with very little highway miles) make the CO *that* high??
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Old 05-06-2010, 07:11 PM
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I'm going to go out on a limb here and say that CO is much higher than just bad gas... I think you're looking at O2 sensors and cats man, sorry.

edit: what's the CEL code? 420? 401? do you need to borrow a code reader for a while?
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Old 05-06-2010, 07:30 PM
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If you have to get a cat, try Bud's Muffler at 10th and Sante Fe. They just put one on my Audi and it cut emissions down to almost nothing, for $380.
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Old 05-06-2010, 07:31 PM
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Quote:
Originally Posted by timmbuck2 View Post
Amber just went to get emissions on her 1997 80 and failed miserably. Bad gas cap and I think she said that CO2 was supposed to be something like 15 and hers was 181. There is a check engine light that I think is O2 sensors. Will replace those, but ARGH! Oh Mr. Robbie, expect a PM and email soon.

T
Wont help with CL, but did you drive it on the highway before hand? Makes a huge difference!!!
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Old 05-06-2010, 07:41 PM
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timm, has the rig been tuned up at all? that will help, along with a clean air filter and a couple cans of heet, but you definitely have something else going on.

got to do mine this month. went over my 08 results and they were hc gpm .1787, co gpm 1.6557, and nox .6021. we'll see if it's all still good. i recently cleaned out the tube through the manifold, which officially eliminated any p0401 codes that it occasionally threw. all i get now are occassional o2 sensors, but i think that's from a leaky flex pipe. going to throw a couple cans of air line antifreeze in first and cross my fingers that it will pass.
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Old 05-06-2010, 08:34 PM
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Cats
Been there done that good tune up would help
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Old 05-06-2010, 09:31 PM
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I ended up with 2 new cats (plus both O2 sensors). Finally passed with flying colors.
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Old 05-15-2010, 11:20 AM
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I'm at the one in Arvada now . They spent a lot of time looking under neath. Not sure if it's the single cat or jerry rigged exhaust
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