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ASM emission help

I have honda accord 86,its ASM emission results are CO 0.01(max.13),HC12(max141) and NO1395(max1161). can anyone help me with these results?1.is my car overheating?2.is car's carborator giving excess oxygen to engine?thanks in advance

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  • steven_stein May 11, 2010

    sounds lke the O2 sensor is bad. If you have a service manual you can look up the fault code. I had an '87 acura integra and it went all the time. There was a box under the passenger seat and the service book had the led codes in it. The O2 sensor isn't expensive but it may be near the firewall (it looks like a spark plug). If it isn't working the default is to just let the HC's out which explains your readings. Also check if the EGR is out as well. Is your car fuel injected or carburetor?.

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The normal reading would be 14.7, but you apparently don't have that number. By the numbers that you appear to have is running rich, which may have taken a toll on your catalyst. You will need to take your vehicle to a garage that is able to use a gas analyzer to tell you what components are responsible for this. I suspect a EGR valve could be one and a misfire...these both could have an effect on your converter, but it might even be some engine problems, so you might be money ahead to get it evaluated properly.

Posted on Oct 10, 2009

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Things to consider or replace...

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