Low brake pedal
 

hello hey I just changed my power brake booster on my 87 Jeep Comanche because my other one was making such a loud hissing noise now my brakes go to the floor and when they stop the front grab I do still have all the original breaking lines and proportional Valves and that rear valve at the rear axle what can I do to get my brake pedal back my brakes were working fine just the power brake booster was making such a loud hissing noise

put the old booster back on?

Low brk pedal
 

Yeah I my thinking bout that I just hate to have take everything back off but I will just have to hurry before I lose warranty

Brakes are an athletic event.

Low brk pedal
 

So true

Adjust the pushrod?

Put a WJ booster in it.

If the brakes were bled properly, it could be your master cylinder. Exact same thing happened when I replaced my hissing booster on one of my cars. Master cylinder solved my problem.

I thought about that since my last post I have taken it to a brk shop changed wheel cylinders but my pedal was still low so the shop adjusted the rod and that cost me an hour on freeway trying to get front brks to release😬😬 so I thing master is ok BUT what I want to know is about that set up with that valve with a rod hooked on my axle what does that do