I've just replaced the driver side brake caliper because it was sticking, but it's still sticking.. it only happens when I brake hard, I'm not sure if I should try replacing the brake hose or what

 

Jack up the front, take off the tire. Spin the rotor. make note of how much effort it takes. Now, step on the brake pedal HARD a couple times, is the brake sticking? If it is, crack open the bleeder. If the brake then releases, that's a bad line. (soft line) If you change one, change 'em both.

 

Okay will do, but if it works that means the whole brake line needs to be replaced?

 

Just the soft line. They tend to break down over time, and begin to act as a one-way valve.

 

Don't forget the one in back going to the rear brakes from the body to the axle.

 

The metal support brackets rust and collapses the hose acting like a one way valve. This happen on both of mine, Gota love the rust belt.