Ford Ranger Noises Hum

I Am Having A Humming Noise When I Accelerate On The Highway Or Even Accelerate At Regular Speed As Well. I Have Changed All The Bearings...

Ford Ranger, 1997, 113,000 Miles, V6 4.0l When I Turn On The Blower, Either Heat Or A/c, Every 10 Seconds Or So The Idle Will Increase....

My 1996 Ford Ranger Is Making A Crackling Type Noise When The Accelerator Is Pressed From About 30mph And Upward. I Have Noticed It Also...

If The Wheels Are Cupping.., Would It Cause A Humming/whiring Sound On The Left Passenger Side? (please See Pic For Information) Thank You...

1994 Ranger 4wheel Drive...while Driving, A Loud Humming Noise Comes From The Front Right And When Slowing Down Sounds Like It's Winding...