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2004 Explorer XLT with ABS


Gdaddy

New Member
Joined
September 7, 2020
Messages
1
Reaction score
0
City, State
North Carolina
Year, Model & Trim Level
2005 Ford Explorer
Hi guys,
I am at a loss and need some diagnostic help. I just put new front rotors and pads on and I had to replace every bleed screw on all the calipers. I bled the system including the master cylinder and I have a rock solid pedal and no leaks when the car is not running. As soon as I start the car, the pedal travels to the floor with very little feeling of pedal pressure. I replaced the booster vacuum check valve and have same problem. Is it the booster???? I know it’s not the master cylinder because it holds pressure and is rock solid at top of stroke when engine is off.
please help, I’m at my wits end and with this COVID bs going on I don’t have funds to keep throwing parts at it.
 




TechGuru

Well-Known Member
Joined
August 23, 2015
Messages
2,022
Reaction score
260
Location
Texas
Year, Model & Trim Level
2003 XLS 4X4 4.0L FLEX
I'm not sure why you even touched the bleed screws for a simple rotor and pad swap, you sure don't need to.

Probably have air in the ABS pump. You need a laptop with free ForScan and a USB OBDII interface to run the ABS bleeding procedure.
 




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