JBL/Nav and using a Blackberry Storm2 listening to Pandora Radio

I have the JBL system with Navigation and a BB Storm 2. I have limited success with playing Pandora Radio though the headphone input jack. THe sound seems to come and go. I thought disabling the blue tooth would solve the issue but it doesn't. I guess my next step is to run pandora though a laptop to see if the same issue happens. Anyone else tried this setup with success?