Hi Guys

I've been having an issue when I apply brakes my truck does a hard left turn, if I let to wheel go it will do a complete 180. I just changed out my calipers with new ones, changed my tie rods inner and outer and my lower ball joints. Still have the same issue.

Not sure what else it could be, any ideas?

 

Collapsed flexible brake line.
Line from caliper to hard line

Lets fluid in but not out(very fast)

They can look fine on the outside but be collapsed on the inside.

 

I have steel braided extended lines... anyway to clean them out or do I need to get new one? Also, since it is pulling hard to left does that mean the passenger side line is collapsed/clogged?

 

It would be drivers side, the direction of the pull, if it is the brake line.
When you press on the brake pedal the fluid goes into the caliper clamping the brake pad on the rotor, when you let up on the pedal the fluid should flow back out so less pressure on the pads, if fluid can't flow back then pads stay clamped until enough fluid is released.

If it was a front ABS problem then it would be passenger side wheel speed sensor at fault, if it pulled left, but you would feel an ABS pulsing, which you didn't mention and is noticeable.
If passenger side ABS wheel sensor shows the right wheel is locking up(when it isn't) then it releases pressure at that caliper, the pulsing you would feel at the pedal, so only the drivers side brakes would be working and it would pull to the left.

If the "rubber" hose inside the flexible line has collapsed then no, no way to fix that.
You could remove the flexible lines on both sides and swap them, see if the problem moves to the passenger side.
Diagnosing a problem on a forum is always "best guess", lol.

 

Appreciate the help. I'll swap the lines and see if it moves. If so I guess I gotta fork out cash for some new steel braided lines. Might as well replace them both at that point.

 

Another test would be to jack up the front wheels and spin the tires
Then apply the brakes, engine off, and let off the brakes then spin the tires again, see if drivers side is releasing.
Then same test engine on, with power assist brakes.

 

If those rubber lines (required from the frame to the caliper) are old, replace all of them, front and rear. They may look good on the outside, but the rubber inside does indeed swell over time/age, cutting off the fluid return.

 

Brakes were good. Here's my culprit.

 

Get out the welder!

 

Done and done.

 

what broke?

 

Where the frame meets the lower control arm, see pic above. Welded both sides real good and added a crossmember from lca to lca. I'll get some pics of the finished product.