I've got a 1994 850. When I start out from a stop and don't stomp on it, the abs system goes bezerk between 15 and 20 miles an hour. If I step on the brakes during this "fit of abs lunacy", the abs fights me, but the brakes still work. It does it all the time. Stop-n-go traffic, idling through parking lots.... it's driving me bonkers. If I stomp on it and get up to 25 quickly, the abs doesn't go beserk. But I don't want to spend my life driving like a lunatic.

I pulled the fuse and this stopped, but the ABS and TRACS lights came on.

I've got codes 122 and 312 coming out of the computer.

I've replaced both front wheel bearings in the last year.

This thing's got over 300,000 on it, still gets decent mileage and I've got to keep it running because I can't afford gas in the big 4x4.

 

try cleaning your sensors first