explorer sporttrak 2001 brakes ease to floor

Hi everyone.
I am up to my elbows in my Ford Sport Trak. 2001. It is front disc only
anitlock with cruise.
I have slightly dark fluid which I am flushing out in hopes of fixing a slow
loss of pressure it seems in the braking.
I hit the brakes to stop and it seems to try and grab but then the pedal
eases itself about 3/4 of the way down as the anitlock then quietly tries to
activate. I then stop on whatever is left. I am cycling the fluid through
all the wheels just in case its that, but the problem seems to have gotten a
a tad worse now that the fluid is new. While I have it apart I am
inspecting everything, but I dont see any leaks anywhere.

I can get a master cylinder or a booster replacement within 24 hours, but I
am not sure which it would be. I am not sure how to distinguish the symptom
in this regard or if thats what it is. Any experts?

"norm" <normplace RemoveThis @conico.net> wrote in message
news:zD6Bg.274$qw5.236@trnddc06...
> Hi everyone.
> I am up to my elbows in my Ford Sport Trak. 2001. It is front disc only
> anitlock with cruise.
> I have slightly dark fluid which I am flushing out in hopes of fixing a
> slow loss of pressure it seems in the braking.
> I hit the brakes to stop and it seems to try and grab but then the pedal
> eases itself about 3/4 of the way down as the anitlock then quietly tries
> to activate. I then stop on whatever is left. I am cycling the fluid
> through all the wheels just in case its that, but the problem seems to
> have gotten a a tad worse now that the fluid is new. While I have it
> apart I am inspecting everything, but I dont see any leaks anywhere.
>
> I can get a master cylinder or a booster replacement within 24 hours, but
> I am not sure which it would be. I am not sure how to distinguish the
> symptom in this regard or if thats what it is. Any experts?

The symptoms you list indicate a bad master cylinder.

Spdloader