Join Date: Feb 2008
Location: Jersey Shore (Not Seaside!)
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With those size tires in your signature?
A couple things could be happening. You very well could have a piston or two on either the front or rear calipers hanging up and not providing full clamping pressure. Sliding pins that are frozen can also impede full braking, so that needs to be checked, too.
Air that has migrated into the ABS controller will not be bleed out just by bleeding. You either need to use a scanner that can activate the ABS circuitry, or go out on a slippery surface and activate the ABS a few time just before bleeding.
Over time, friction material that has not been "worked" tends to have more organics on it's rubbing surface, so three or four 50 to 20 mph stops in a row tends to wear this off and develop the higher temperatures to regain a good carbon surface.
Former Vehicle Test Manager, Friction Products.
03 F350SC 4x4 6.0 Auto 5/30/03
Truck Modifications below in Pictorials on Facebook. Search in Google - Facebook TooManyToys
Step Lights;Painted Flanges; Bypass Oil Filter; Heated Mirror Switch; Reverse Lights; 7.3L Fuel Reg Shim; 6 Disc Radio Speed Volume Mod; Coolant Filter, etc.