ecu shouldnt read 02 at WOT ..only during part throttle ...so its not the o2....

sounds like your ecu may be chipped ..if not then look into bad injector mabye .....

but all in all you need plugs wires cap rotor
and if it still does it then its time to switch ecu with a friend if you can and see if it makes a diff ...if it does you know where to start ...

 

how would the injectors go bad?
=/

i just changed the cap+rotor and the wires are ordered

how would cap+rotor and wires affect AF?

 

An injector can go bad just like any other part that uses a ciol of wires to make them work ....if by chance one has over heated caused buy who knows what ..the resistance in the coil of wires changes and the injector may want to stay open longer then its supposed to resulting in to much gas goi ng into the motor .......


and if a cap and rotor are weak it wont burn the fuel properly resulting in rich condition ......

have you pulled all your plugs to see if theyre all running rich (you can tell by trouble) or mabye 1 or 2 of them will be rich and you can narrow your problem down to one cylinder ..once thats done it will b easy to fix..


also dont be afraid to switch ecu with some one if you know they have the same ecu as you (p13)

 

hmmmmm if i took it to honda, could they tell me exactly what is wrong?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by flyrod &raquo;</TD></TR><TR><TD CLASS="quote">It could be the O2. If that sensor is bad, the ecu could be adding too much fuel and think it's running fine. A temporary fix would be to reset the ecu, but the ECU will learn (in a bad way with a bad sensor) over time and end up back where it is now. What sort of mileage do you get? Do the plugs have lots of carbon? Reading plugs can be an inexpensive way to get an idea of what the A/F is doing. Read up on how to do that. If they still read rich after a new O2 and ecu reset, start checking things like the MAP sensor, FPR, injectors, TPS, IAT, stuff like that. If you know someone with hondata who can help you, you can log all the sensors and see if anything looks odd. P13 ecu's are notoriously rich in VTEC (but not as rich as you were getting), so a chip tuned for your setup or a s100 or similar hondata setup would be ideal, though a little pricey. My H22 made the most power at around 13.3-13.5:1 A/F. And like other people were saying, a tuneup never hurts. Check the compression, timing, ignition components, etc. Ohh, one more thought, it could be a clogged cat (in part, but still doesn't account for the a/f). I have seen that happen before. Good luck...
</TD></TR></TABLE>

this is a very good post read carefully,

im not so sure that the ecu ignores the o2 input at WOT but i could be wrong.

start with plugs wires carp and rotor, and then try replacing your o2 sensor, a sensor that is contaminiated or gone bad can report a lean condition to the ecu and then dump a **** load of fuel,

edit also make sure your secondarys are opening. , get under the hood and rev the engine up past 5000 and make sure that you see the secondarys opening up. i think if you secondarys arn't opening , some how they are stuck closed then that would be why your going so rich, theres no air to compensate for VTec

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by prelittlelude &raquo;</TD></TR><TR><TD CLASS="quote">

this is a very good post read carefully,

im not so sure that the ecu ignores the o2 input at WOT but i could be wrong.

</TD></TR></TABLE>

o2 input is ignored by the ECU at WOT

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by H23 Power &raquo;</TD></TR><TR><TD CLASS="quote">

o2 input is ignored by the ECU at WOT</TD></TR></TABLE>

ok ill take your word for it,

 

i dont know what the secondaries look like....or where they are sooo....=/

btw what does WOT stand for? &gt;&lt;

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by AznBlueBoy &raquo;</TD></TR><TR><TD CLASS="quote">btw what does WOT stand for? &gt;&lt;</TD></TR></TABLE>

Wet Old *******.
White Oval *******.
Wide Open Throttle.

 

so right when you rip it, the o2 sensor is ignored?

 

when the car is floored, the ecu goes into open loop mode where it runs on set parameters and nothing else. nothing can change those parameters except for a chip or device like hondata.

in closed loop mode, the ecu takes data from sensors and modifys the maps in real time to reflect that data

so once again, when the car is floored (WOT) the o2 sensor becomes useless and ignored by the ecu.

 

so the problem wouldn't be the o2 sensor...
what else could it be then?
i just changed the cap+rotor and wires
i dont feel a difference

 

do a compression test