Funky ABS (yes another ABS topic =P )

[Andyjo]

So we've got this 98 Legacy Outback, and when you apply the brakes, they're fine, until you're going very slow, and at the end of your brake pushing, the abs kicks in.... ideas?

[OB99W]

A weak signal from a wheel sensor might cause this; at slow wheel rotation speeds, the output from the sensor/tone-wheel is not only at a low frequency, but lower in amplitude. If too low, the ABS may think a wheel has locked, and kick in. Naturally, the wheels are going slowest near the end of a stop.

 

Some Qs:

1) Has the ABS light been on (other than a second or two when first starting the engine)?

2) Is the problem recent?

 

Weather conditions in the Northeast have caused unusual icing conditions in some areas. If the OB hasn't been in a warm garage lately, it might just need a defrosting.

 

If you get back with As to the Qs, I might have some troubleshooting ideas.