I have a 94 4runner with 142000. I bought it and soon after driving it the right front caliper seemed to lock up. I bought a new caliper and new brake pads for the front of the car and replaced them. Now a month later at random times both front brakes will slowly clamp down on the rotors for no reason, i pulled over to check the rotors. They were hot and with in 3-4 minutes they released and drove just fine. This has happened a couple of different times. Dose any one have any info??

 

You have an obstruction in the brake lines to the caliper somewhere.