decalbomb777

If i slowly push the pedal and keep pressure on it will go to the floor.
I thought it was the master cylinder so i just put a new one on and it still does it?

Had no lights on for the brakes before i put new MC on but now i have a brake light on?

03 f-150 super cab - 4.6

ccriley

Any leaks in brake lines or cylinders underneath?
My 03 is getting kinda rusty but luckily no problems yet.

tuflehundon

Mine is a different year range, but did that same. Ended up being a hole in one of my hard brake lines, drivers front. The ABS would allow the brakes to work, but I lost fluid, and it would go to the floor if I didn't keep it full. My leak was bad enough that I had to tow the truck home and and fix the line.

decalbomb777

No leaks...thinking it may be the ABS assembly.
But now the damn thing wont start
Wont turn over (one click and thats it.)...tried taping on the starter but still nothing.

decalbomb777

Ok have it all fixed...bought a new (used) ABS assembly and put it on (was very easy to replace if you remove the inner fender well)
and it wouldnt start because the power wire corroded and fell off.

Also used my Autel MaxiCheck Pro to bleed the ABS system.

All is good now...