a whiring/whining noise coming from underneath on 1993 Ford Explorer

The Noise Just started this morning it occurs when the car is in nuetral or in first with the clutch engaged, I have been having issues with fuel economy, smelling gas, and a low/loping idle speed could this be connected? Helped the fuel economy by using fuel injector cleaner and the highest quality gas and will

Asked by for the 1993 Ford Explorer
1 answer
could be pilot bearing is dry and or t.o.bearing is going bad