I have a 2004 Jetta TDI. I was driving and I heard a whirring noise that was definitely turbo related. About 3 miles later the car went into limp mode. I went a few more miles the the engine would not even idle. I had to flat bed the car home. Today I disconnected the top intercooler hose from the intake manifold and the engine started and ran solidly at idle. When I re-attach the intercooler hose, the motor will not even start and smoke bellows into the engine compartment. When the engine idles now, there is no longer a whirring noise. I did not run the engine for any length of time or high RPM for fear of causing more damage. Can anyone point me in the correct direction.