I've had this problem for a long time, and still haven't gotten it fixed. After my exhaust and high flow cat was put onto my 98 lude, the check engine light came on. It has got to be the O2 sensor because that is the only sensor in that area that i know. The ECU has been reset numerous times, only to have the check engine light come back on. I even called the Honda dealership in my area and they said there's no way to fix it. But there has to be a way to fix it.

 

Well did you ever get the code for your cel? If its indeed your O2 then you will need to buy a new one.

 

but if it says its the cat u should get a o2 sim cuz high flow cats can bring up cel

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by raylude &raquo;</TD></TR><TR><TD CLASS="quote">but if it says its the cat u should get a o2 sim cuz high flow cats can bring up cel</TD></TR></TABLE>

Where could i get an O2 sim?

 

you are getting the code for catalyst inefficiency or below threshold, cuz the ecu is looking for to see if the cat converter is there or is doing its job, get a o2 sim to cure the problem

http://www.casperselectronics.com

 

In my situation I bought a high flow test pipe with the O2 bung already in it. I've never got a secondary O2 code. You might want to look into that if you don't have emissions like Ohio!

 

Replacing the 02 wont solve your problems, Prettylude is right. OBD2 cars will throw a code for catalytic efficiency... Convert to OBD1.

 

why the hell would you spend all that money to convert to obd1 when you can just plug in a o2 sim for 70 bucks and fix the problem

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by raylude &raquo;</TD></TR><TR><TD CLASS="quote">why the hell would you spend all that money to convert to obd1 when you can just plug in a o2 sim for 70 bucks and fix the problem</TD></TR></TABLE>

he was just giving a suggestion, the reason why people convert back to obd1 is that the system is not as sensitive and pick everything damn thing up like obd2, and most of the ems like hondata or neptune require obd1, just a suggestion man

 

because an 02 simulator isnt an 02. why trick your computer when you can have it actually have it work properly. and send your computer real information.