Car still misfiring after I've replaced spark plugs, coil packs, fuel filter and mass air flow sensor. Local auto zone ran a diagnosis on it codes came back for O2 sensor in bank 1 but I have catless exhaust the O2 sensor are plugged in should I buy new O2 sensors???? Open to all suggestions

 

What are the actual codes that are showing up?the misfires should be showing a code.

 

I would pull the new plugs and check for cracks or damage.

 

The only code that it's showing is for my O2 sensors

 

Ok I'll try that

 

Seems like the only thing you haven't replaced that could also cause a miss is fuel injectors. Since you have replaced your coil packs and plugs turn your car on and unplug fuel injectors. Everyone you unplug should make the miss much worse so.... whichever one doesn't effect this miss fire is the bad injector

 

And don't buy new o2 sensors cause the light is going to just come back on. You need MIL delete connections. Or just deal with the check engine light. I do its kind of annoying but I know its the rear o2

 

Thanks bro im gonna try that out today!!! Ya the check engine light came on soon as I deleted my cats.

 

Yep MIL eliminators to the 2 blue back o2 sensors should take care of it if you removed your cats

 

I'm tryna see what's causing the misfire