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Zj proportioning valve for rear discs trouble

alexbl

NAXJA Forum User
Location
western ma
So swaped in some rear disc in my cherokee... had no brakes so i put in a zj prop valve for rear discs, took out the little o-ring, hooked everything up bled them and now my brake pressure warning light has been on. So i have no leaks and the pedal is great and i even swapped the little sensor from the OLD prop valve thinking maybe it was bad and still nothing. Anybody have this problem as well? and any sugestions would be great
 
Had a similar problem on an older XJ after doing brake work - turned out I had an air bubble in the prop valve. There was a bolt on the end of mine and I loosened that slightly so that when the brake was applied the air could escape. Just like brakes, once I was getting just fluid I tightened it up and viola, the light was off.
 
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