I have a 87 Pickup, 2.4 2BRL. The rear brakes will lock up in the first 10-15 minutes of driving, and will eventually release and drive fine for a bit before locking again. It varies from a small hang to completely locking up. The cooler the temperature the more apt it is to happen. I've replaced shoes and wheel cylinders on both side, adjusted both sides, and bled the system. Problem is still there. Anyone else had this issue, it's new to me? Thanks for the advice.

 

I had this same problem. I did the whole shebang. Wheel cylinders, shoes, springs, adjusters, drums, parking brake cables. It solved my issue. Maybe your drums are warped and still grabbing the shoes?

Also, did you bleed the LSPV on the frame above?

 

I haven't replaced the springs or drums. I lubricated the cables, originally thinking the problem was being caused by the park brake. I recently bled and adjusted the LSPV, and within 10 minutes of running approximately 45 mph, the rear brakes locked worse than ever.