honda genome

1995 integra RS (California)
miles 151k

Here are the results, I failed only the %CO everything else passed fine:

Someone please help me and tell me what this means, and what I should do, any help would be appreciated, thanks

15mph
%co2: 14 %O2: 0 HC: max = 90 ave=21 meas=48 %CO: max =0.54 AVE=0.06 MEAS= 1.18 (<---FAILED) NO: Max=711 AVE=150 Meas=51 (very low)

25mph
%co2: 14 %O2: 0 HC: max = 56 ave=13 meas=40 %CO: max =0.53 AVE=0.05 MEAS= 0.93 (<---FAILED) NO: Max=754 AVE=136 Meas=38 (very low)

honda genome

anyone...?

erik92DA

Looks like the engine is running rich for some reason. Or the cat is losing its efficiency. Probably not ignition related.

honda genome

Yea, that's what some people have been telling me, there is too much fuel in the engine which isn't getting combusted, therefore having a spike in CO (running rich). Could be a number of problems...clogged cat, which will send wrong signal to MAP thus making the car use more gas. Maybe O2 are starting to go bad....

SlammedDC2teg

Was your car warmed up. I had a broken thermostat and almost failed in the same spots as you did.

honda genome

CEL came on today, faulty O2 sensor.....changed O2 sensor also, will post results in the morning if I pass smog or not.

DC2_005200

Yea hopefully it was just your o2 that went out.

youre_scum

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Honda Genome &raquo;</TD></TR><TR><TD CLASS="quote"> Could be a number of problems...clogged cat, which will send wrong signal to MAP thus making the car use more gas. Maybe O2 are starting to go bad....</TD></TR></TABLE>
but i thought the primary o2 sensor determined the feul map, the secondary on the o2 is there to make sure all unburned gas is burned thru the cat? Cause a catalyzer is supposed to burn all enviromentally harmful unburned gases right? So either your catalyzer is on its way out, on something air fuel related is dirty. You should move to north georiga, us rednecks aint got no emersions.

youre_scum

also, factory o2 sensors can only read voltage signals between a very small margin or band, then fail below and above it, its usaually like 9v to 13v???(hints a WIDEBAND o2 senosr being very vaulable to tuning) or something very small, any way make sure it really is a pricey o2 sensor before replacing it.

Wayne_Curr

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by youre_scum &raquo;</TD></TR><TR><TD CLASS="quote">
but i thought the primary o2 sensor determined the feul map, the secondary on the o2 is there to make sure all unburned gas is burned thru the cat? Cause a catalyzer is supposed to burn all enviromentally harmful unburned gases right? So either your catalyzer is on its way out, on something air fuel related is dirty. You should move to north georiga, us rednecks aint got no emersions.
</TD></TR></TABLE>

he only has one O2 sensor, he is OBD1

youre_scum

so it only has a primary o2 sensor at the end of the collectors, then how would your ecu know wether or not the cats bad?

youre_scum

assuming your gas milage hasnt dropped, id say its just the cat not burning unburned fuel.

honda genome

CEL came up as O2 sensor...Obd1 has only 1 o2 sensor b4 cat....

honda genome

O2 sensor was the culprit....car passed smog 20mins ago!!!!