I’m at a loss and looking for some advice from people that have experienced what I’m experiencing. I had this issue even prior to changing everything that I’m going to list below:
Vehicle: 2002 F-150 220k miles
Replaced: Brake master cylinder (Motorcraft), all 4 calipers with new Element 3’s, new Motorcraft blue brake pads, all rubber brake lines replaced (Motorcraft) and front lines replaced with SS lines.
I bench bled the MC, installed on the truck, then bled at the MC lines with my Motive bleeder.
Connected my Autel scanner and cycled/bled the ABS pump twice before moving on to each caliper (staring from furthest from the booster). Then did a brake bed-in procedure (Zeckhausen).
Got all of the bubbles out and even used a rubber mallet to tap on each caliper to get any and every bubble out. My problem is that when I press on the brake pedal with the engine running, the pedal makes a “whoosh” sound and travels “softly” about 1 1/2” before getting firm. Sometimes if I drive for too long and try to come to a stop, I experience brake fade and it’s hard to stop. Am I bleeding the ABS correctly? Am I supposed to bleed the ABS per caliper?
I’ve read that this could be a bad ABS pump, a bad booster (split in the diagram), or still have air in the lines.
I’m at a **** loss..