Acura mdx right front area making grinding sound

This due to either a worn wheel bearing or a worn front drive arm.

The most common cause of a grinding noise when turning is a worn front wheel bearing. What happens is that the weight of the car is shifted on to that wheel as you make the turn causing the worn bearing to make a grinding noise.

could be the water pump, is the temp rising high any coolant missing, could also be the bearing on the auto adjuster for the belt. cutting out is it a slow cut out or a fast cut out ?

May be a wheel bearing ,if it is driving straight and weaving
left and right will change the noise.(louder turning one way
than the other)

check/replace wheel bearings
check replace disc pads and rotors

It means there is a problem with the transfer case, 4wd system.
try disconnecting the battery for 2-3 minutes and see if it clears.
if not get it decoded at AutoZone or Kragens with their scanner.

It may also be one of the Oxygen sensors. I had the same problem and Acura told me that the front O2 sensor needed to be replaced. When that happens, for whatever reason the 4wd system is automatically disabled until you replace it. It is safe to drive but yoy have no all wheel drive right now.

You may want to check into a recall!! If the problem occurs during accleration between 20-40 mph, Call your local dealer.

MDX runs as FWD most all the time so I would have them check CV joints and boots usually need attention after 100K miles

a bad wheel speed sensor will do that generally in the wheel bearing on newer models but not always if the sensor is external rust can build up pushing the sensor away bottom line the abs sees the difference in speed and assumes the vehicle is skidding or slideing and deploys generally only happens at low speed 7-10mph when stopping hope this helps

there might be a pebble in the exhaust heat shield

If it happens with light accelleration then there's a good chance it's your torque converter. This is one of the few weak points with MDX