I just got a Del Sol and it didn't pass emissions. I'm thinking it could possibly be the o2 sensor. Anyone have any ideas on what it may be?

Thanks!

 

i'm not sure what kind of tests they run for emissions in your state, but which one did you fail?

 

show me the numbers and what mods you have.

 

be a lil more specific and i can help

 

mainly what mods do you have and what is your five gas

 

hc ppm 15mph
limit 183
mine 143
hc ppm 25mph
limit 200
mine 154


co% 15mph i failed the tests at the 15mph and 25mph marks
limit 0.73
mine 1.92
co% 25mph
limit 1.07
mine 2.00


no ppm 15mph
limit 2400
mine 2160
no ppm 25mph
limit 2333
mine 2123

the reason i put the exhaust on was because, the car had the full muffler assemble rusted underneath including the hders

so i just bought http://cgi.ebay.com/ws/eBayISA...WN:IT
and
http://cgi.ebay.com/ws/eBayISA...WN:IT
and i got a midpipe as well from a local place

 

the gay *** "jdm" high flow cat is most likely the problem. its not jdm. if you ever see a jdm cat, you better have paid about 800 for it.

 

definetly sounds like your Cat. I had the same BS problem on my civic, failed the same test, replaced the CAT and I passed.

 

Thanks guys for your help.

Do you think a factory integra cat will fit right?

 

heard a rumor also, if you use higher octane gas, it will burn cleaner. and yeah, the cat will make a big difference,

i had a smog done, and my max pts i was allowed was 180 something, i was hitting 2300 pts, woww.. changed my cat and i was at 20something pts.. change that cat.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by maka &raquo;</TD></TR><TR><TD CLASS="quote">heard a rumor also, if you use higher octane gas, it will burn cleaner. and yeah, the cat will make a big difference,

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running a higher octane gas than required by the engine will not burn cleaner. in fact, it may have higher HC numbers because an optimal engine will perform best when it has the octane closest to its detonation threshold. with a higher octane gas, you will possibly have unspent gas and make HC numbers worse.