Brakes overheating after driving a while

Dana67Dart said
When this happens are all 4 wheels locked up?

Next time this happens pull the vacuume nipple (not just the hose, the nipple has a one way valve in it) out of the Power brake booster, if you instantly have normal brakes the booster is the issue.

I would not keep trying to drive if you start deeling a drag, you can destroy rotors and pads and calipers.

I will give this a try next time. I unplugged the hose last time and they just went to power brakes

dano said
Have you replaced the rubber lines? There are 3, two in the front one at the rear. They can swell. Also, fluid, has it been fully replaced? Do your calipers ride on pins or have retaining clips? What condition are the wheel bearings in?

I have not replaced rupper lines. I only added fluid to top it off when I replaced the calipers. Ill post a picture of the calipers.