Zimmlude

Hey all,

I realize this has been posted before but nothing I found really helped me. I just went and got my emissions tested and I failed it I have a JDM H22A swap with a stock CAT and Type-S intake. Here are the results of the test:

Item: HC/CO/CO+CO2/O2/RPM
Cruise Lim: 150/1.1/6/N/A
Tested: 143/0.46/15.56/0.44/2060
Idle Lim: 220/1.2/6/N/A
Tested: 322/0.06/15.26/0.69/700

You can see that the HC's are all rather high. I failed at idle and I was damn close at Cruise. The little paper thing they give me says that if the HC's are high the car is running lean. I have an appointment with the Honda dealer to have it diagnosed but I am worried they will a) b*tch about it being a JDM motor or b) not know a damn thing and just say I need a new X.

If I spend $150 I can have the test waived but I really want to know what the root cause is (it bugs me to know the car isn't running at it's peak).

My question is, anybody have any ideas on the culprit?

Thanks,

(btw this is the first time I have tested since the swap)

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Jason

 

wreckdiver

What kind of gas you running? Our H22's require higher octane, could be all that needs changed?

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Missin da Jape --- RIP bud!!

Zimmlude

I have always run premium fuel (92 is the best we get around here).

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Jason

Zimmlude

After reading through some other posts I noticed someone failed due to a bad O2 sensor. I was under the impression that if the O2 sensor goes bad it would throw a CEL. Is it possible for the sensor to go bad and not throw a CEL?

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Jason

TruNinja619

^yea.... it can be a lazy O2 sensor.... or the sensor can be reading biased Rich or biased lean..

an OBD-I car can't pick up a lazy O2 sensor.. so yea.. only way to know if you have a lazy O2 sensor is you hook up a Digital Oscillascope on the O2 sensor and look at the graph..

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4thGenReady2Go

if it is in fact lazy, and not gone bad alltogether, I've heard you can take a torch to it if to burn off carbon buildup on the sensor itself, anyone know if that works?

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Senna: Another reason to own a Prelude.

Zimmlude

Well, I took it to the Honda dealer and they tested it and guess what, it passed! So they took it down to the state testing station and ... it passed!!

So basically, I paid $100 for Honda to figure out I may have waited in line for a little too long

Oh well, I am in the clear now.

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Jason