4wd car drives w/loud whining noise, engine shuts off when driving. on 2000 Toyota 4Runner

The loud whining noise is continuous, cold or warm engine. Oil light remains lit even though oil is full. Engine turns off unpredictably. Car is not being driven until some idea of the problem. We have put too much $$ into car last 2-3 years. Thanks for any info.

Asked by for the 2000 Toyota 4Runner
the oil light indicates a oil pressure problem. driving it with the light on will do severe damage to the motor. you need to have a shop check it out for oil pressure.