i have searched the forums and most others hissing comes from vacuum hoses. My sound is only present with the top up and i cant get a clear idea of where it is coming from, it only happens when the car is moving. It's not that loud but definitely sounds like the noise of a train when it is coming to a stop! Anyone else ever had this? im starting to think it may be something in the convertible top itself, i patched two holes in it last week. Any help is appreciated!

 

First question: Do you have a freight train in your car? If we can rule that out, then we can move on and really make some progress.

 

Tranny? Diff?