tech = jk question = makes noise when driving on road when going around curves its quiet. If you turn the wheel loose it goes straight if you turn just a little either way the noise stops.
JK: The noise you are describing could be tire noise or possibly a noise front hub bearing. Hub bearings will make noise when turning in one direction, and not the other. That is, unless both are noisy. To check for a tire noise, rotate the front tires to the rear and see if the noise goes away or changes. For a noisy wheel bearing, drive the van straight. Turn the wheel slightly to the right. If the noise is there, or gets louder, then the left front hub bearing is the most likely cause. This is because the body roll puts the vehicle weight on the lf. side during a right turn. Same rule applies for a left turn.
Anti-lock brakes are designed to prevent skidding and help drivers maintain steering control during an emergency stopping situation. In cars equipped with conventional brakes, the driver pumps the brakes, whereas in cars equipped with four-wheel ABS, the driver keeps a firm foot on the brake allowing the system to rapidly and automatically pump the brakes. Because the wheels don't lock up, drivers have the ability to steer around hazards if they are unable to stop in time.