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update - still have pull under braking
So here is a quick update on my situation:
I was experiencing a hard pull (right) under braking and assumed it was my brakes. So I changed my brake pads with all new clips and lubricated the slider pins and piston boots. This did not fix the problem. Next, I replaced my front brake calipers with an SSBC big brake kit, flushed fluid and added new DOT 4 fluid, and installed SS braided brake lines in the front. This did not fix the problem. The rotors look brand new and have plenty of material still so I did not replace. Next, I looked into the suspension, thinking I may have some weak spots in my suspension causing the pull. I had installed a 4” Pro-Comp lift kit (complete with shocks, front springs, add-a-leaf rear spring, dropped pitman arm), dual steering stabilizer kit, Hellwig rear sway bar kit, and warn premium hubs. I also had the suspension shop check the ball joints, tie rod ends, drag link, front sway bar, steering box, etc. and align. They said all looked fine except for some play in the steering box. None of these suspension upgrades fixed the brake pull problem. What is weird is that the shop installed a ball joint cam to adjust the caster and the brake pull still occurs, only now to the LEFT. Next, I had the steering box replaced at the dealership. I also had the dealership check the ball joints, tie rod ends, drag link, front sway bar, wheel bearings, etc. and align. Dealership said all looked fine. The new steering box fixed my slight road wander and constant steering wheel adjustment, but brake pull (left) still exists. I have a firm pedal so I assume my booster and master cylinder is good. I do not have any brake vibration/shutter so I assume my rotors are good. I have not looked at my rear brakes yet. I have no CEL codes/lights. It seems like the pull worsens as the brake system gets warmer.
I don’t know what to look into next…. Any ideas?? What am I missing??
My Excursion is a 2001 4x4 with ~60k miles.