Braking problems on my 79

[kingbronco]

Hi I'm new to the site I have a 79 bronco running a 460 with a 4 inch lift and 35's. i bought the truck 6 months ago and love it but since i bought it the brakes have been real week. I thought the front pads and rotors might be shot but they looked almost brand new i did find a stuck caliper and replaced it and bled the system still barley any braking force the pedal is still soft but i cant find any air in the lines. If i try to do a brake torque its like the brakes aren't even there any help would be much appreciated.

Thanks

 

[Red Green Jr]

check the brake booster, a large circle located behind the fluid reservoir, this may have gone bad and therefore loosing power brakes.

 

[Fritz180]

I had that same problem and realized that I had a bad master cylinder.

 

[fordsohc46]

you might try adjusting rear brakes. if they are wore out or way out of adj. it can cause soft pedal. if not it is probably the master cyl.

 

[kingbronco]

I put a master cylinder in not long ago thinking that was the problem it did help but brakes were still bad. I looked at the rears and it looks like the wheel cylinder are leaking could that be contributing to the problem?

 

[Justshootme84]

kingbronco, I have had the same problem with the 78 Bronco, and agree that it's likely a leaky rear wheel brake cylinder. I keep loosing fluid, and the brakes go out. I finally noticed it the other night when I drove into the yard, and the headlights hit the back left tire from underneath. Noticed a dark streak running down the inside of the tire. The rear cylindrs are only liek $10 apiece, and it's a fairly easy repair. the rubber on the ends of the cylinder will go bad, especially if the vehicle sits for a while. JSM84

 

[kingbronco]

I'll try that hopefully that its I'm also going to put a new booster on it since i got one sitting in the garage new. I just want to get that baby on the road.