Front Drivetrain noise


Junior Member
I've got a 1993 F-150 4x4. Ive got coilrite airbags installed to handle the extra weight, but am noticing a bit of noise: When driving with the front hubs engaged, I notice some vibration from the front drivetrain, and sort of a low whirring noise. This noise is not dependent on whether I'm in 4 wheel drive or not, so I guess that eliminates the transfer case. Any ideas on what to check for?