one of the codes is prob the o2 sensor becuase the muffler shop didnt weld on the peice cuz they didnt have it in stock.. but the car rode fine.. had it for about a week and a half now.. i was drivin kinda racin it and it started sputtering... its weird to explain but what do the cel mean and what are the chances i jumped a tooth on the cam gears... i have skunk2 stg 1 sk2 valvesprings, sk2 retainers.. about 5k old... and sk2 cam gears.. cam gears are still at 0

 

73 is misfire in cylinder 3.

 

yea...i know that one i found that out when i over reved my car to 11k about 3 months ago
and the other 2 are the o2 sensors.. what could cause the misfire?

 

02 sensor can and WILL cause the misfire. My car has JUST been threw this. Get new plugs, and fix ur 02 sensor. It took about a week for the 02 sensor code, to make ur car run rich, and foul out ur plugs. Which makes it studder.

 

it really takes a week to make the car run crappy??? i have the first o2 sensor in the header just not after the cat.... would it just happen suddenly while drving or would it happen gradually?

 

ttt