Hey i drive a 94 ranger 4x4 with a 4.0. I was driving along when my brake pedal starts to fail. I take it to a shop and they tell me my master cylinder is shot. I was a bit suspicious so i had a mechanic friend take a look at it. The reservoir is full of brake fluid but the pedal still goes all the way to the floor and is useless. My abs light is on as well. He pokes around and sees there's fluid on my passenger side frame rail and we see what looks to be a small solenoid of some sort that has brake fluid leaking from it. I have noticed that i have been having to fill the master cylinder a lot more that usual and i at least now know where its leaking from. I am trying to locate this part though and have no idea what it is called. Anyone have any help or clues that can send me in the right place? Any help would be appreciated.

 

Are you sure it wasn't the driver side frame rail?? The RABS Proportioning Valve Switch Assembly is on the DS rail near the front of the cab.