A grinding noise heard when taking off and turning can be a number of different things. Depending on whether your vehicle is a front wheel drive or rear wheel drive, the source of the noise can vary.
1. If a FWD, it can be your CV (constant velocity) joints which are part of the drive shafts that drive your wheels. These CV joints allow the drive shafts to bend with steering and suspension articulation while still delivering power to the wheel. An Accordion boot covers each joint to keep grease in and dirt and contaminants out. A torn boot will allow the grease to escape and cause premature wear and failure to the joint. A failing CV joint will make a grinding or clunking noise when the whee is turned.
2. If a FWD, it can be a wheel bearing. Wheel bearings keep the wheels turning smoothly and quietly. A failed or failing bearing can make a rumbling noise when going straight and/or a louder grinding noise when turning as the vehicle imposes more stress on the part.
3. If a RWD, It may be the rear differential since differentials allow the wheels to turn at different speeds while cornering. A noise heard from the differential could be a mechanical problem such as the bearings inside, but usually equates to depleted fluid quality. (Honda CRV's were known for this problem, and the fix was to simply drain, flush and fill the differential with new fluid.)
Turning uses a knife edge to shear a piece off grinding uses a stone to abrade and break off a pieces the width of the stone turning point or line contact grinding area contact
i have a grinding noise on the front left wheel. i have taken the calipa off and i have one brake pad that is shot. could it be that or can it still be the bearing. how can i find out.
A failed bearing in the transmission.A failed bearing in the transmission.
Because cars aren't meant to fly
right side lower ball joint or possible cv shaft
If you turn around a corner and you hear a grinding or clicking noise coming from the front wheels, you may have a CV axle problem. This grinding or clicking will be much worse when turning one direction than turning the other. If the noise is worse when turning left, the right CV axle is to blame, if the noise is worse when turning right, the problem is in the left CV axle. For a bad wheel bearing, you must raise the vehicle so the wheels are off the ground... Grab the tire firmly and try to wiggle it around. A bad wheel bearing will have a lot of play and will wiggle around, a good wheel bearing will be solid and will have very little or no play.
Turning off your hearing aid works as well.
Possible vacuum leak
Have your mechanic check the rear bearings for the grinding noise. If the noise is like a rumble strip then the torque converter may be bad. Mark VIII are know for bad torque converters.
The bearings on the alternator could be going bad. Remove the belt from the alternator then spin the alternator by hand to listen for grinding.
If the transmission is slipping on take off, but there is plenty of fluid, the gears may be frozen up. This can also make a grinding noise upon acceleration.
the a/c compressor cluth is bad. should make a grinding noise when not on and goes away when it is on.