Vibration and pull.

[101lifts2]

Originally Posted by Triple

Should have paid more attention to this post before purchasing parts.

Installed new pads, rotor, and caliper only to have it lock right back up again upon application of the brakes. Only other cause that makes sense is an internally blistered brake hose not letting fluid return up the line.

I've been working on cars for 20 years and never heard of "blistering".

Check to make sure the foot brake is adjusted properly in that the stoplamp switch is not adjusted too tightly.

If you bleed the brake caliper, you should have seen if the fluid was moving properly.

[fasternyou929]

Originally Posted by 101lifts2

I've been working on cars for 20 years and never heard of "blistering".

Funny, it HAPPENED to my car.

It was a GM. Go figure.

ETA: Link for 101. "Basic Hydraulic Components" mentions blistering

http://books.google.com/books?id=sjd...age&q=&f=false

[101lifts2]

Originally Posted by fasternyou929

Funny, it HAPPENED to my car.

It was a GM. Go figure.

ETA: Link for 101. "Basic Hydraulic Components" mentions blistering

http://books.google.com/books?id=sjd...age&q=&f=false

I've heard of what this describes, but it was never referred to as blistering. Usually the hose swells and collapses.

Triple, check to see if the hose collapses or swells when the brake pedal is applied and released. If it doesn't, I would be surprised if this fixes it.

[fasternyou929]

Originally Posted by 101lifts2

I've heard of what this describes, but it was never referred to as blistering. Usually the hose swells and collapses.

Triple, check to see if the hose collapses or swells when the brake pedal is applied and released. If it doesn't, I would be surprised if this fixes it.

When it happened to me it was undetectable from the outside. The failure occured inside the metal reinforced line so all looked fine by visible inspection, which led me to replace the caliper only to have the same problem. I had to remove the hose and shine a flashlight inside to see the collapsed area.

[101lifts2]

Originally Posted by fasternyou929

When it happened to me it was undetectable from the outside. The failure occured inside the metal reinforced line so all looked fine by visible inspection, which led me to replace the caliper only to have the same problem. I had to remove the hose and shine a flashlight inside to see the collapsed area.

When you bleed the caliper, was the fluid flow normal?

[fasternyou929]

Originally Posted by 101lifts2

When you bleed the caliper, was the fluid flow normal?

Yeah, the master cylinder creates enough pressure to push fluid through the damaged/collapsed part of the hose. Visual inspection was the only way to tell (well, that or replacing everything and still having a problem).

[fasternyou929]

Originally Posted by Triple

The lining inside the hose collapses. When you press the brake pedal, fluid can rush into the caliper, but when you let up, the lining collapses and fluid can't return up the line, maintaining pressure in the caliper.

I had never heard of that either, but when I spoke with a mechanic in the family last night, he basically restated fasternyou929's suggestion here.

Sucks you have to order parts again, but at least now you know what it is.

Just be glad yours didn't go out the way mine did. I was driving up 441 in Fort Lauderdale and hit the brakes when a pedestrian stepped from the median into the highway. When he saw me and retreated, I released the brake pedal only to have the steering wheel nearly jerked out of my hands. The left caliper maintained pressure, and to this day I'm 100% sure that poor guy things I tried to take him out.