MidwestSi

The car pretty much back fires every once in a while full throttle a couple seconds it will putt putt till it works its way out and everyonce in a while on taking off I also noticed that at stops it almost idles at 0 but when my foot is on the brake the rpms drop let off the brake and it goes up just a little I know its not a leak already checked. I'am throwing a cell 43 replaced filter didn't help. So I'm thinking O2 sensor but I have no idea. Can anyone help, I have also heard IACV put I have no clue how to check it thats it please help its embarrassing to drive a backfiring machine. I have checked timing and ignition they are all set correct so could this be an o2 problem

95dxhatch

code 43 = 43 Fuel supply system
refer to this in the future
https://honda-tech.com/zerothread?id=1171263
fuel supply means fuel pump, injectors and filter. if youre gonna start throwing parts at it i suggest replacing the fuel filter first. 20 bucks at autozone. got any friends or any place that can probe your injectors and see what kind of waveforms your inejctors are putting out? if youre going the shotgunning route (throw parts at it) start with fue filter then pump then injectors or just find used injectors off someone on ht for cheap. pm me if you got any questions

fizeks

code 43 usually comes up when your o2 sensor is gone .. u run too rich... it happend to me.. i replaced it and problem went away after that i changed the plugs , cap and rotor, and fuel filter to be on the safe side peace

IHateJDM

most of the time, 43 is for the o2, but not always. it does sound like you are running rich though.