Ok so I had a guy at autozone look at the car and he said the cap was good (dont know if hes right or not. But the car is still doing it!!!!! I was at taco bell tonight and I had to turn the car off to keep it from overheating!! It only does it when im not moving and when the A/C is on I dont know what the problem is :hsdunno: but it needs to get fixed ASAP!! thanks for all the replies and help I appreciate it!!!