my CEL will randomally turn on and off and sometimes when i hit around 4k RPM im car will start rocking back and forth and wont go past that RPM
any ideas what it is?

 

no its not flashing its just some days it will be on for like 3 hours then it will be off for like 4 days, then go back on. it only does the jerking sometimes though... its weird. it runs fine most the time.

and the codes were fuel injector problem, cylinder misfire, o2 censor, and something else. it was in bank 1

im thinknig it might be the o2 censor

 

the only reason a cel will flash is if its damaging the cat. you only have 1 bank. and ive never seen a fuel injector code. typically it will tell you which cly has the miss. if your throwing a o2 code.. thats your problem. inaccurated metering of your a/f will cause that. change the sensor and do it yourself. its soo easy and will save you a couple hundred bucks for about a 10 min job. what are your mods..

 

Gm stage 2, Fujita CAI,