[Aaronz28]

Stock engine but cold air box, e-fan concersion

its throwing an o2 code but the sensors are new/clean. New cats installed as well

now randomly
After running great for a while - it starts to miss
And once it starts it seems the only thing i can do is to disconnect the battery for an hour or so.
The scanner shows #2 cyl miss fire and #2 coil control unit.

so i disconeectdc the bat, changed the #2 coil
It drove great foe 200 miles - the. Randomly started again.

bought another new coil just in case,didnt solve the issue at all.

so i replaced the injector -started the car,acter 3-4 minutes of rhnnkng, it cleared itself out, and-ran great for another 100 miles - them missfire
Again

Any ideas?!?

 

[Civteck]

The wires have been known to burn on the manifold, header, have you changed or swapped wires around?

Sent from my SM-G991U using Tapatalk

 

[Bigtuna13]

Bad #2 plug? Bank 2 sensor? could have a small crack in the plug, maybe. Heat makes it worse, cools down, acts normal, heats up, starts misfiring maybe? doesnt sound like wiring. Two cents

 

[Bigtuna13]

I mean injector or coil wiring fwiw. Ya bad plug wire maybe

 

[Bigtuna13]

Does it miss at idle, like soft miss or HARD miss like a dead hole only at idle, but smooth when you’re on it? Sorry for the multiple posts

 

[Aaronz28]

it acts like a dead cyl - and is def down on power but does allear to rev smooth from 2000 on up - just really weak.

 

[Aaronz28]

also - I'm sorry this is in the Trans Help section... anyone know how I can move it to the correct category?