Possible causes of popping/grinding noises when turning:
Bad wheel bearings usually cause a grinding noise, and are known to only cause it when turning.
Maybe a head gasket?
most grinding noises that come from turning is usually a cv axle that needs to be replaced. Can also be a bad wheel bearing. If you hear the grinding when turning to the right then the left front wheel bearing is bad.
Diod you check front brake pads
If it is a front wheel drive sometimes a bad cv joint can cause a popping sound when you are turning.
Have your brakes checked, rust or wear on brakes can cause grinding when turning.
if its a front wheel drive vehicle then it could be the axels
If it pops when turning it is most likely the CV joints.
Check and see if your power steering fluid level is low.
This is usually a grounding problem. If you can, try turning over the wall plug and see if that helps.
It is not an uncommon problem. It has to do with the mandibular joint (in your jaw) and should be examined by your dentist. If you know that you have teeth grinding, search on it for web pages to read, and tell your dentist that you want to learn how to prevent teeth grinding, which can eventually harm your teeth, jaw joint, and cause chronic pain.
Could be a wheel bearing