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Sorry for the late reply, I ended up doing the wj booster/master and it fixed my issues. The brakes work much better than they ever did and I feel confident stopping quickly. I wish I knew the exact cause of my issue but it must have been either the booster, master or something with the lines.

Thank you for the input, I appreciate it. I’ve been leaning towards bad MC aswell just hard to keep throwing masters at it and not getting anywhere. I’ll try bench bleeding it once more(mrblaine block off method) and if that doesn’t work I’ll make a trip to pick-a-part and do the late model swap.

I actually did replace a steel line for the master to the combination valve because the old one was cross threaded. I’m not getting any air from the lines or leaks around the area and I have good pressure coming from the bleeder so I assume I did it right. Another symptom I have is when I jack...

When the car is on I can pump or hit the brakes hard and the brakes gain another inch or so of pedal but then goes down to that last inch where I can still push hard to get the car to stop.

The pedal feel is what I would call normal like how it used to be and most other cars I’ve driven, doesn’t really pump up. When I do the same and turn the car on the pedal instantly goes about an inch from the floor and gets hard. The booster holds pressure for a at least a a couple minutes...

RCP Phx: I’ve bleed the proportioning valve and adjusted the rear brakes. I have checked to make sure the bleeders are right way up. I might take the proportioning valve apart to see if I can clean it out. Saudade: I’ve had the jeep for over a decade now, the brakes were never great but never...

Hey all I have a 1990 XJ that I have been battling the brakes on. The first 2-3 inches of pedal are very soft with almost no resistance with enough braking power to drive around 15mph and come to a stop. the last inch of pedal gets very hard and if I push it about as hard as I can stop it with...

Hi all, I've been having an issue with my 89 4x4 4.0 5 speed Cherokee since Changing out my master cylinder. It started off with replacing it because there was a slow leak on the rear port caused by cross threading. The brakes worked decently while leaking. I took the line off to replace the...