Ever since I started driving my friends old
Expedition. I noticed the ABS light is always on.
There is no odd noises. I only noticed a real issue
this year due to my brakes locking up because of
the snow... any ideas what it could be before I
spend money fixing something that doesn't need it.
That is telling you something is wrong with the ABS system and if the breaks are locking up in snow, then you know something is wrong. ABS is not working. Take it and have it scanned for codes. They should be able to pick up on a ABS code which would point you into a direction for repair.
ditto up above, check the wiring and connections at your speed sensors on the wheels, could have a rubbed wire or bad/dirty connection.
If the light stays on when you start the truck it's most likely going to be a wheel speed sensor. If the light goes off then comes on when you start moving the truck it's probably going to be the pump and modulator assembly. The computer scans the sensors at start up. When the truck first starts moving the computer runs the pump and modulator assembly to test it. HTH. -Jim
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