So ongoing problem before i say anything i already replaced sparkplugs and also coil 3 (think i need to do the rest)
Lets say when i do some spirited driving around 80mph the car begins to have a vibration and the engine light will blink and will blink about 10-15 times and then turn off as i slow down. 4 days this week the car would actually missfire a few seconds after cold start ill shut it off and start it again with no misfire. Cold start misfire says cylinder 1 when im doing 80 i get a vibration and a misfire on cylinder 3 what i think i need to do now is replace the rest of the coils and also do my upstream o2’s being that i have a cheap set in there from the previous owner car also smells like its running really rich if i also dont havw the ac on it will have a slight surge at idle

 

Is it throwing any codes??

 

Post any codes it's throwing.

 

Throwing p0303 p0301

 

But they dont stay on

 

Just to verify, you already replaced both plugs, and verified gap on them correct?

And cylinder 1 is the front right cylinder, and 3 sits in the middle, directly behind 1. Just want to make sure you aren't replacing coils on 2 and 4 accidentally.

In the meantime I would swap the coils from 1 and 3 over to other cylinders on the opposite bank just to see if the codes switches to those cylinders.