I've got a 1997 Expedition with 4 wheel ABS. The vehicle has been
plagued with a spongy brake pedal. I've followed the basic old
fashioned brake bleeding procedure of open bleeder, depress pedal,
close bleeder, and also tried vacuum bleeding the wheel cylinders.
Nothing gets rid of the spongy pedal.
I've pretty much come to the conclusion I've got air trapped in the
ABS pump unit. From what I've read, to remove that air, I have to
somehow cycle the ABS motor. I know that Ford's NGS scan tool has
that ability, but rather then take it to the dealer, I'm curious if
there is another way to activate the pump.
The Ford NGS tool runs about $2000, so that option is out, but I
wouldn't mind buying a lower cost scan/diagnostics tool if it has the
ability to read codes and run the ABS pump to fix this current
Any help is appreciated from the Ford experts.