Been chasing a brake pull problem for 2 years!!!

[LittleCaesar]

The MC didnt run on low fluid on its own. It ran low as i was bleeding it pushing old fluid out

If you ran it low enough, many bad things can happen. Been there, done that.

But I would start with new hoses all around.

 

[jman11788]

So I just put a temp gauge on all the brakes after driving about 20 minutes
Results:

FL: 165°
FR: 152°
RL: 112°
RR: 125°

Is this an indication on anything?

 

[Mchaz]

I have been chasing a brake pull and vibration too. Mine only happens during harder braking or braking from higher speeds (40+). The vehicle jerks right then the wheel corrects the course back mostly straight by "auto" counter steering.

I've also ruled out calipers/rotors by doing a Tundra upgrade and SS lines. I have also replaced UBJs, LBJs, OTRE, and ITREs. Mine is still on it original control arm bushings, however, so I think my next step will be Whiteline bushings in the LCAs and SPC UCAs.

After reading the thread that's linked to several posts up, I think I will also be checking my LBJ/tie rod connections. Mine are new OEM Toyota, but it appears from that thread that there was a bad batch with oversize IDs where the OTRE attaches to the LBJ.

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To follow up, I put Whiteline bushings in my LCAs and swapped my UCAs for adjustable ones from SPC last weekend. The brake jerk/pull is gone, it aligned great, and it drives like a whole new vehicle now. The original LCA bushings were so bad that the inner sleeve had separated from the rubber on two of them allowing it to freely wiggle in any direction. The other two were easly moved with a screwdriver down the bore.

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