Drive Shaft Noise - Identified

[dkoetsier]

As a heads up, I recently had a noise that would develop above 25 MPH and would dissipate after 40 MPH or so. It would emanate from the lower portion of the center of the vehicle (below the floorboard). I went under the vehicle to look for the typical items - loose heat shields, loose exhaust, etc to no avail. A week later the noise got more intense. This time I jacked the rear axle to allow the rear wheels to (safely) spin while stationary. Per this method, I identified the noise as a manufacturing label that was on the driveshaft that was coming loose. While stopped, the label was tight to the driveshaft. When spinning, it would fly out and hit the surrounding shield. Hopefully this feedback helps someone with the same issue!

 

[99WhiteC5Coupe]

As a heads up, I recently had a noise that would develop above 25 MPH and would dissipate after 40 MPH or so. It would emanate from the lower portion of the center of the vehicle (below the floorboard). I went under the vehicle to look for the typical items - loose heat shields, loose exhaust, etc to no avail. A week later the noise got more intense. This time I jacked the rear axle to allow the rear wheels to (safely) spin while stationary. Per this method, I identified the noise as a manufacturing label that was on the driveshaft that was coming loose. While stopped, the label was tight to the driveshaft. When spinning, it would fly out and hit the surrounding shield. Hopefully this feedback helps someone with the same issue!

Year, make, model & drive type?

 

[chuck s]

Playing card in the bicycle spokes!

-- Chuck