ok so i know what the codes are just need some help troubleshooting them. p0171 and p1133 which the guy at autozone told me its doing with the o2 sensor. i replaced the front o2 sensor about 6 months ago with a boush which i know they arent that good since they throw codes. and then it threw a left bank running lean and a random misfire. i didnt get all the codes because the scanner threw 12. but the codes came up twice on this scanner, and it also threw that the egr valve had low circut so im thinking could be the reason for the misfire? but the engine is running like crap but not accerlerating. what its doing is bogging down under acceleration and then when it does it like surges then bogs and then surges. it feels like sometimes like its out of gas when its bogging down. the idle is alittle rough when i first start the car by rough i mean jumping from 750-1000. i unplugged the egr valve(no emissions here in indiana) and it runs alittle better but still alittle bogging under acceleration. im at a loss here. ive replaced the wires, plugs air filter, about a year ago did the fuel filter. so could this be my pump starting to go out? injectors clogged?
