around 3,500-4,000 rpms my b16 ef hatch starts to sputter a little, then it kinda snaps out of it when i mash down on the gas. it doesn't do this all the time, but it does it alot more when im driving on the highway. anybody got a clue? i was thinking a fuel problem..... but im not really a mechanic.

 

Check your o2 sensors...common problem w/ ef b16's. IIRC, mine were backwards when I did my swap.

 

mine has the same problam and throws o2 code. i just havent changed them.

 

yea thats prolly the problem. i just got the car, and i didnt know it but it doesnt have an o2 sensor in it currently. but now, it kinda stopped doing the 3,500-4,000 sputter thing and switched to the low end stall thing. yea, when i come to a stop it almost stalls. it sits @ around 1,000 rpms then falls, then shoots back up then falls. i dunno what the hell is goin on.

 

u cant hock them up backward the plugs r diff..

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by thebonniesong &raquo;</TD></TR><TR><TD CLASS="quote">around 3,500-4,000 rpms my b16 ef hatch starts to sputter a little, then it kinda snaps out of it when i mash down on the gas. it doesn't do this all the time, but it does it alot more when im driving on the highway. anybody got a clue? i was thinking a fuel problem..... but im not really a mechanic. </TD></TR></TABLE>

Mine does the SAME exact thing.

Its the o2 sensors thats causing this ??

 

ya its the o2 cuz every once and a will mine throws a code. but i dont want to change them in this cold *** weather we are havin.

 

do you know which o2 sensor it would be ?

 

im not sure it is throwin a cel 1 but im just going to change both of them they were only 10 bucks at pep boys.

 

my ecu doesnt even throw a code for my o2 and one of them isnt even connected

is that normal ?

 

that its not throwin a code i mean

 

another common problem is people splice the two o2 wires into one and run off of one o2 and wonder why it sputters at times

 

well..in all honesty, my car does the same. Both of my o2's right now are run at the end of the collecter on my header b/c i'm too lazy to have a shop weld bungs into my header. Also, remember that if you are using the o2's that came w/ the swap that they most likely have some miles on them and havent even been used in a while...due to the engine sitting in a warehouse. I would replace them and run them the correct way. These are 1 wire o2's..they arent heated.

 

ok, i'll check them out. thanks

 

try doing a fuel injector serive on it. i just did one on mine and it hasnt done it yet.

 

READ THIS POST IF YOU WANT TO FIX THE SPUTTER PROBLEM.

Sorry for the caps but I have written this many times now. As far as common B16A swap problems, this is probably as common as the bitch pin but not alot of "how-to" posts on it.

<U>The problem is that your O2 sensors are hooked up backwards.</U> The stock plug from your EF wiring harness will only plug into the wrong O2 sensor on the B16A, this is why everyone has the problem. You need to switch your O2 sensor wires, disconnect battery, reconnect and voila! sputter free driving and noticeable better gas mileage. Enjoy!

 

can u just switch the pins in the ecu? r the pins on the wires even the same?

 

i just recently had this problem with my b16 i thought it was the swap searched everything...and it turned out it was my fuel filter when was the last time you changed it?

 

i changed mine today. im going to try swapping the wires and ill let everyone how it goes.

 

my fuel filter has been leaking to, and im gonna change it tomorrow. i'll let you know how it goes and if it fixes the problem

 

mine did that and I changed the fuel filter, but i wasnt throwin codes.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by thebonniesong &raquo;</TD></TR><TR><TD CLASS="quote">my fuel filter has been leaking to, and im gonna change it tomorrow. i'll let you know how it goes and if it fixes the problem</TD></TR></TABLE>

OR you could switch your O2s and fix the problem. The choice is yours. I know what I'm talking about.

 

oh, i plan on doing that too. but im not throwing code, so id figure id try the fuel filter first. if that doesnt work i'll tackle the o2

 

If it's not throwing the O2 code, then why would you flip flop it? Try the fuel filter first, I know on jeeps if one 02 goes bad it'll sputter, but that's not what i've experienced with hondas.

 

Just switch the O2 sensors. It won't throw a code because it is still reading them both, it is just making adjustments to the fuel mixture for the wrong cylinders. ie, if reading a bit lean, it will dump more fuel in the wrong two cylinders and then read rich for those two and try to lean them out but will actually be leaning out the other two. You are running two cylinders lean and two rich at partial throttle. Trust me, don't bother with the fuel filter bs unless you actually haven't changed it in five years (even then you won't notice a difference, it's just maintenance). I know I am right. Change the O2s and enjoy your car running right for the first time since you did the swap. It feels good.