My 89xj had rust issues and it was time to part ways.. I stripped and scrapped it and bought a 94xj to build. I finished today and took it for a test drive. Didn't work out well. Made it about 1/8th of a mile got it up to highway speeds and hit the brakes. When I hit the brakes some of the worst death wobble I have ever experienced reared it's ugly head. Drove another 1/4 mile fighting the dw before I could turn around. Got back to the shop and my front brakes were smoking. Now the set up.



94xj mid 90s D30 with 1t otk steering and track bar, stock calipers pads, yj brake lines, stock proportioning valve, 99xj booster and master cylinder. everything in good working order before the swap. Brakes bled twice with a power bleeder.

What would cause both front brakes to lock up at these time and not unlock?





Parakeet

 

Either the calipers are seized or the lines collapsed. Have you cracked a bleeder open yet?