8083tcman

i got a 00 civic with a d16 5speed and when ever i press the gas on low rpms the car sputters then goes good.. what could this be? 02 sensor? map sensor? spark plugs? let me know what you guys thing is my problem? also cel is on for 02 sensor

bmoua

solve the cel problem, if u still have a problem let us know.

roadsqueegy95

im having the same problem with my 99 si, except im not throwing any cels. i changed the plugs once, it fixed it for a while, but it came back.

Jimster480

when did you change the plugs? Is it just a stock 99 si?

roadsqueegy95

i changed them back in the summer some time, its got a few upgrades nothing big tho, header,cold air,tb spacer,wires

Jimster480

just pull one out and see if its fouled, if not then its not ur problem. It could also be injectors or fuel filter. Run some injector cleaner (I recommend techron) in there.

marcs1337

did you change the wires too? ive always done plugs/wires together

00b20vtecoupe

ide say wires...

Jimster480

true, it could easily be the wires. Get some NGK wires for replacement. I ordered mine on amazon for $42.

Mr.Chow

sounds like a problem with your plugs...change them again...make sure you use ngk-r's and thaat they're gapped properly....solve your cel problem and get back to us.

esean93

yeah it the o2 sensor.my car has the same problem and the o2 sensor is not pluged(i cant find the plug on the wiring harness lol).

autoponicz

same problem i have..checked the 02 and it was dead...replaced it and the car ran fine for months....then came back....this is a EK with a jdm b16 and jdm ecu...not tuned...
looks to be running rich and killing the 02...wil have to wait till winter passes to get on it again...

ESEAN93..what do you mean its not plugged?...ill have to look into that

8083tcman

i checked my plugs and it looks like its new.. im thinkin either 02 sensor, fuel filter, or spark plug wires? i also heard from some friends that the o2 absolutly does not affect the way the car runs? is that true

travis-b16a2-eg

similar problem here (https://honda-tech.com/forums/tech-misc-15/b16-eg6-starts-fine-runs-good-cold-very-hard-start-bogs-when-hot-2460867/) except mine runs decent when its cold and sputters and bogs when warmed up, seemed fine this morning after it was fully warmed up but after i turned it off it started actin up again.

i read up on a old thread and the guy happend to have a bad coolant temp sensor, something easy to check on yours. seems like a o2 or a sensor problem. something minor for both of us. my **** runs perfect cold so must be a sensor.

BoRiCuA

Bump for i'm having the same problem and haven't been able to figure this **** out!!

This is the stupid little sensor right below the distributor correct? if it is i've read that at cold its suppose to read 2.5 - 4.5 volts also for the Intake air temp!!

Well mine is reading without the car started just ke turned 16.7 volts and the IAT is at 4.9 volts which is correct, so what's up with this **** can someone confirm this..........

8083tcman

i changed spark plug wires and still the same..

travis-b16a2-eg

cman.. does your car run like this all the time or is it similar to my problem where it runs good cold but like **** warm.

-=ZAK=-

could your timing be/off bad plugs?

EGhatchguy

my si hatch is doing this same thing with a d16z6 runs great when it is cold but then when it gets warmed up it starts missing and wont accelerate like at all just changed the cap and rotor because they were corroded but that didnt change anything... anyone figure this out yet?

blink_977

check distributor rotor cap for spark leakage or replace it. mine was leaking and there were weak spark, hard cold start and poor acceleration. mil code for O2 sensor is from random cylinder misfire.

8083tcman

some how my car has weak starting and sputters so maybe its the distributer cap.. but also does it only when the cars motor is warm

travis-b16a2-eg

bump for 8083ctman... duno if this is gona help but ill throw my word in there considering we both have similar issues and there seems to be a few others out there.

if it starts up good cold you know for sure the fuel system is good, plugs and wires are good, most likely spark is ok but i would recomend testing the coil and ignitor with a ohm/volt meter to be for sure, tps is good because it doesnt even rev past 2.5-3k with a bad or off set tps, map is good(wont even start with bad map).. pretty much leaves it to be either your o2, coolant temp, or ecu. i could of left something out but that pretty much covers it. i think the iacv, knock sensor, and intake air temp sensor would all be ok because it runs good cold and doesnt throw any cel's


my hatch seems to be worse... it will start right up and run perfect when its cold but once it warms up it starts to sputter and bog very bad, also very hard to get started again.

8083tcman

how do u fix the coolant temp? is it under the distributer?

travis-b16a2-eg

yep the coolant temp sensor is right under the dizzy on the left side of the head... i know you can check it with a volt meter to see if its ok but im not sure on the specs. i can take a look in the helm manual tomarrow... do you have a volt/ohm meter so you can test the dizzy and sensors? if not you can buy one for pretty cheap and they come in handy when you run into problems like the both of us. im going to test my distributor and sensors with the ohm meter tomarrow so hopefully i find out the problem.

The_Honda_Guy

If it runs fine when it's cold but not when it's warm it's most likely a problem related to the ECT (engine coolant temp) sensor. Since it starts just fine cold you know that you're getting the correct spark, fuel, and air. Essentially what's happening is once the car warms up the sensor is reading incorrectly, causing you to get the improper amount of fuel whether it be too little or too much.

What CEL are you getting? Too rich/lean? Misfire?