90 civic with b16a1, no CEL.

I have searched many threads and found no definitive solution to this problem. At low rpm, low throttle (-50%) or trying to keep a steady rpm, it bogs, misfires, stutters, whatever... But at full throttle or high rpm, no problem. My idle also jumps about 1-200 rpm and fluctuates sometimes as low as 250rpm to 1k (seems to be related to my brakes... think the master booster is leaking... pedal sometimes goes to floor).

So far I have found that it is more likely to be plug gap, wires, coil, clogged cat, o2 sensor(s), etc....

The swap was done 2 months ago and I jumped the 2nd o2 directly from the 1st o2 on the ecu. Could this be the main problem? If so, how should I wire it with only one o2? Anything more specific?

Brake problem sound like idle problem, or search other areas?

Any help is appreciated.

 

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id also like to know answers for this, i have a slight miss, flux idle and my brake petal goes down, not to the floor but low

 

well I changed by plug gap from .044 to .040, this seemed to fix the misfire, etc. The idle still fluctuates 50+/-, but much better.

The brakes will continue to be a small problem and will be fixed sometime.

 

let me know if you resolve this because i have this problem and i just replaced my cap/rotor/plugs the problem went away for a bit but its coming back.

 

do you think there could be something wrong with the TPS sensor???

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JOGADOGGZ &raquo;</TD></TR><TR><TD CLASS="quote">let me know if you resolve this because i have this problem and i just replaced my cap/rotor/plugs the problem went away for a bit but its coming back.</TD></TR></TABLE>

Changing the plug gap resolved my stutter/bog/misfire. It also corrected the idle flucuation within spec (50+/-). Start there if you haven't already.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JOGADOGGZ &raquo;</TD></TR><TR><TD CLASS="quote">do you think there could be something wrong with the TPS sensor???</TD></TR></TABLE>

Start with the plug gap. TPS is most likely not the cause.

 

you might need to replace ur Idle Air Controller . .

 

Try borrowing a buddy's distributor you know works and see if that clears up the problem. I'm guessing either the ignitor or the whole dizzy is shot.