So ABS was working fine. Then I replaced the whole rear axle with a 97 axle I got from the wrecking yard. Now ABS is constantly working under normal braking. Then while on the highway the ABS light would come on, ABS gets disabled and then brakes would work as normal. Brakes all bleeded out, changed sensor with one from my original axle and still has same problem. Any clues to whats going on here?

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