99 durango 5.2 4x4

Front disk rear drum

Brake line (left side from front to rear along the left frame) rusted through andifferent I replaced it. Tried to bleed with no luck. I know sometimes you can bleed the fronts to get the proportion valve to open again but it's not working. I have done both having someone pump/hold brakes and vacuum method. I have read keep hitting the proportion valve and it will open up but I honestly don't know where it's at exactly...

Anyways what to do?

 

Well today I started to check flow. I took off the line to proportion valve brake peddle went to the floor. Took it off at the block on the frame (behind driver tire) where I connected new line brake went to the floor. Ran out of day light before I could check the rear of the new line to see if I could get it to come out back there.

By the way the block on top of the rear axle is just a " t" fitting right? It's not a valve correct?

 

correct, the valving is all done at the front

 

Just to update it ended up being the rear line that is the rubber hose and the T fitting on the back. It was clogged up and I was also told they deteriorate and the rubber collapsed inside as well. So, u know it when I tried to take the lines off from the T fitting the lines were so rusted they just snapped. I purchased a new T fitting line and 2 standard brake lines. After bending everything I found out the T fitting is metric and also a bubble flare. Needless to say I didn't have the tools (and I bite at making flares) so I had to take it to the shop. $120 (wasted 20 on the brake lines I purchased at the auto parts store)..

Anyhow if ya all run into this problem there is probably you're answer.

 

Hey Good job on finishing the thread to the end. More people like you are needed