I'm sure something like this has already been posted before. So sorry if it's a duplicate. I have a '98 1.8t Passat. When I start my car I hear a strange "whooshing" noise repeatedly from the engine bay. It tends to disappear after the car warms up and it may be nothing serious at all. I haven't noticed any performance problems and it doesn't idle roughly.
And sometimes it doesn't even make the sound. I'm just wondering if it's something anyone has encountered before, and if so how serious is it?