just got his coupe for 500 bucks. nice really. everything was okay u know, driving and everything. then i let the car sit for 4 days. all of a sudden the brakes locked on me. cant really go anywhere or drive it. i thought it was the calipers so changed it. still it was the same problem. need some major help guys what should i do?? anything would really help.

 

Sounds like you need a new master cylinder...when the seals go out it can stop letting the brake fluid back in the reservior when you release the brakes and the pressure builds up and the brakes stick...

Happened to me and a new MC fixed it 100%