What produces a loud grunting noise from abs system on takeoff on 1998 Mercury Mystique when you remove abs fuse to deactivate system noise goes away?

Answer 1

If the noise to which you are referring only happens one time at drive off after inital key-on/start of the vehicle, this is probably from the ABS pump motor. The activation is known as "pump check", whereby the pump motor is turned on for a short burst to verify it is functioning. The pump motor is a critical component in the ABS system. It's function is to pump the brake fluid back to the master cylinder after pressure decrease at the wheels. If the motor does not repond to the pump check activation, the ABS light is illuminated on the instrument cluster indicating the ABS is not functioning properly and a trouble code is stored in the vehicles diagnostic system.