Novak Conversions Jeep Wrangler TJ radiator

Problems with brakes locking up

redrooster888

New Member
Original poster
Joined
Aug 17, 2025
Messages
1
Location
Roanoke, AL
Hey guys, I need some advice. This is kind of a long story about the brakes on my 2001 TJ. I was having issues with my front brakes locking up after making a short 10 mile trip. I replace the master cylinder, the proportioning valve( could not find one for a tj so I got Brass Brake Proportioning Valve Disc Drum PV8796J Replacement for 1987-1996 Jeep CJ XJ & YJ Wrangler 2.5L 4.0L) . It still did it. I replaced the calibers, still did it. I replaced the brake hoses, Bleed the brakes and it seemed good but hadn`t made the 10 mile drive yet. Got in it to move it to cut grass and pressed the pedal and had full brake pedal then it went to the floor slowly. Turned out it was leaking fluid through the sensor on the proportioning valve. Had to order another proportioning valve to get the sensor. I put it on and it blew fluid through it also. So I bought one off a wrecked 2000 tj. Put it on but I can`t get any fluid to the rear brakes to bleed them. I have a soft pedal that will hold till you let off a little then it slowly go`s to the floor. So I ordered another proportioning valve, Installed it today and went to bleed the lines going to the valve from the master cylinder. I have fluid in the port closest to the firewall but nothing from the front port. Do I need to replace the master cylinder again? Any advice would be a great help. My Jeep has been down nearly a month now. TIA
 
Novak Conversions Jeep Wrangler TJ radiator