Quote Originally Posted by dsmuts View Post
How do you know the o2 is bad? I'm thinking when the o2 is messed up the car goes into either open loop or closed loop i can't remember which but it won't want to start when cold because it won't give it the extra gas that it needs to stay running. Change the o2 and it should be fine.
the check engine light came on the other day and i had autozone run the code. i was also thinking this could be the problem but the only problem i see with your theory is that the first time it did this was before the check engine light came on.