I have an '02 Ram 4x2 that the LF caliper locked up on. After inspection of the calipers I found that the pistons in that caliper cracked and broke apart. I replaced the caliper and hose on both sides for good measure. After that the pedal would go to the floor ,but would get firm if you pumped it up. Then back to the floor after you let off for a few seconds. Acted like the master cylinder went out at the same time cause I didnt remember the pedal going to the floor before. Replaced the master cylinder and it still goes to the floor. The truck has rear wheel abs only. Am I missing something here? Tomorrow Im going to clamp each brake line to see if the pedal stays firm. I have bled all calipers several times.Please help!! Thanks Alex

 

Did you pressure bleed them? I had one ( not the Dodge ) that had to be pressure bled to get all the air out... sorry, can't remember what it was.. But, please post the cure as I would be interested what you find..

TJ

 

I let all of them gravity bleed. Then had a buddy pump the brake pedal while i bleed it again.

 

Well I got to looking at the calipers and saw that both had the same part number on them. The RF caliper had a tag on it marking it as the LF. Called the parts store back and asked if both calipers were susopsed to be the same and they wernt. The bleeder was on the bottom of the caliper so everytime that I was bleeding the caliper all the air was rushing to the top and sitting there. Got the correct caliper and all is good now!!