sasquatch85

I have a 2005 F150 4x4 Screw 68k miles lifted 6in W/ 35in tires. The mysterious grinding happens while braking i can feel it in the pedal and if i put my left foot to the back of the floor board i can feel it there as well while braking. First thing that came to mind was BRAKES so I replaced the pads and rotors with drilled and slotted rotors and ceramic pads. Nothing changed ! Im a little stumped here guys I have read a ton about this and I am still stumped. Any help would be greatly appreciated !

BayStater

Does it feel like almost like the ABS is going on when you start braking?

sasquatch85

No not really and goes away if you release pedal ....

BayStater

For the past few weeks I had a somewhat similar problem, occasionally when I hit the brakes it would feel like was scraping on the way down and it had force feeback but it went away after a few minutes, anything like that or is it constant?

sasquatch85

Very consistent like i said i even replaced all 4 rotors and pads with drilled slotted rotors and ceramic pads still doing the same thing

BayStater

Sounds to me like it must be the master cylinder, especially if you can feel it through the floor.

sasquatch85

If it was the maser cylinder wouldnt i lose pedal pressure or it would do it all the time ?

BayStater

Maybe, but it doesnt seem to me like its a physical brake part. The only thing I can think of is something in that whole unit; maybe the piston assembly. Alternatively there could be some foreign stuff/ air in the brake lines.

PerryB

IWE solenoid maybe ??

Especial86

iTrader: (1)

Brake dust shield? Or a bad caliper pin?
Any drivability issues like bumps, pulsation, pulling to one side or banging?