PDA

View Full Version : 91 dodge brake problems.



hkszx2
11-09-2008, 08:55 PM
So my jeep hasnt been running in quite some time and I havent been around and feel like a dick for popping up just to ask a ?, but I really am stuck. My dd is a 91 dodge d150 2wd with a 3.9l v6. I have replaced the master cylinder, one caliper that was stuck and both rear wheel cylinders and bled the brakes countless times. Now the problem is i have no brake power. When the engine is off the pedals are stiff and dont go to the floor ... As soon as i turn the key on they go to the floor. Some times it takes about 3-4 blocks for me to loose all brake pressure. IS it just air in the lines i cant get out or is it the power booster?

Goosed76
11-09-2008, 09:13 PM
Sounds like a vacuum booster diaphragm that's shot to me, or maybe a vacuum check valve- does it have ABS? Could be an ABS problem(air in the valve body) might need to have a shop bleed the ABS system, then re-bleed the Base Brake system.