brakes start pulsating /making noise only when coming to a stop on 1996 Nissan Pathfinder

ABS lite came on & brakes were pulsating & making a noise. Had brakes & pads replaced and while the problem has changed slightly, it's continuing. The ABS lite came on just once since the brake job, and now the pulsating/noise occurs only when I'm coming to a stop, at the low speeds. A mechanic friend checked brakes again &wheel sensors, they are fine. Any idea what the problem is??

Asked by for the 1996 Nissan Pathfinder
If you did not have the rotors machined or replaced, then you may have warped/worn out rotors. The new brake pads accentuate this and can even turn on the ABS light. I would take it back to the shop and have them check their work just to make sure it is not anything more seroius.
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If your car has a dust plate behind the rotor, check it. It is a thin metal plate that covers about 40% of the wheel and rotor assembly. I made a mistake while changing brakes and slightly bent it towards my rotor while trying to give the caliper bolt that extra "uuuumph". It wouldn't make noise while I was at high speeds however, it squealed and grinded at low speeds. A friend of mine found it and I surely felt like a jacka$$ knowing I had caused the problem while replacing the pads. The great thing about it is that the repair was free. Let me know how it goes.