When I back up in reverse I get this strange howling type noise. I don't have a FSTB, Ive heard that can cause it. Are my motor mounts bad? Any help would be appreciated. It's an AT as well. Thanks!

 

Could be a transmission problem. Do you hear the noise at any other time? Where is it coming from? The engine bay, a wheel well, maybe the exhaust?

Need more information from you to help diagnose.

 

Only in reverse, and only when pressing the gas. Sounds like its in the engine bay/steering column. I don't think it's a tranny problem, at least I hope it isn't...doesn't happen all if the time either. For instance, in mornings when I back out of the drive way I just coast out and I have no problems.