Okay I have a 2004 SC Monte carlo ss, I have a 3" catless zzp dp, CAi and a tuned pcm from Reptile, I was recommended to buy replacement autolite 606 copper spark plugs, I went today to change them, started driving down the road for a test and the car started sputtering, came back to the garage took the plugs out and 3 of them cracked , okay so then i went to the auto shop and bought a set of NGK iridium spark plugs instead, replaced those and same thing still sputtering and misfiring, then i went and bought a set of duralast wires replaced those and same outcome but this time i had some smoke coming out and i dont know wtf is going on, at autozone i had the chick there read me the codes hat got thrown out. they are
p1664 skip shift 1-4 upshift lamp control circuit fault. probable cause open or short circuit condition in the driver circuit, failed or missing bulb.
p0140 ho2s12 circuit condition heated oxygen sensor bank sensor 2, probable cause engine misfire condition-repair, oxygen sensor defective, fuel system running very rich or lean check other codes first, fuel pressure very high or low fuel pump or pressure regulator
p0654 engine speed output control circuit fault, probable cause failed tachometer or instrument cluster error, open or short circuit condition on output speed circuit, driver circuit ecm defective.....
SO please I need some help!!
Originally Posted by SuperSport
