Hissing sound when engine running - even at idle..
I seem to have a "hissing" sound coming (not loud) from the 944 when I drive it, and still when I idle. It is difficult to tell where it is coming from.. sounds like it may be underneath the car.
I have noticed that the car smokes a little more than normal from the exhaust.. I'm pretty sure it's not a broken hose as most of them they have been checked/replaced recently.
Any ideas? Could this be a transmission issue perhaps?
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