My ABS has been intermittent since about '96 when I had a Mazda dealer service the brakes.

It was under extended warrantee and spent some months with a couple of dealers trying to find the problem - they never did. They replaced the central hydrolic actuation/distribution thing-a-ma-bob under the hood with no improvement. Since the damage seems to have been done during the brake servicing I figure the problem is likely with sensors at the wheels. Fortunately, when the wheels are wet the ABS stays the most operational.

Has anyone had similar problems or suggestions?