The tensioner was allowing the tension wheel to bounce around hitting a block casting and making a racket. Changed tensioner wheel, automatic tensioner, and belt. Re-Timed motor and all is smooth now. I have a rumbling noise in right rear tire is wearing unusually too much on outside of tire. Also, have what appears to be skipping marks on outside edge of tire like the tire could be bouncing during braking.
Inflation is correct.
If they are okay, have the car's alignment checked with four-wheel alignment equipment. My question involves the thermostat. It sounds like a goose, and it last for maybe a second or two. I have been told it might be the thermostat being stuck. Any ideas would be appreciated.