I recentely bought this 11 y.o. Charade and it's been a dream to drive so far, except for the issues with the air fan in the cabin. It wasn't driven much before and sat in a garage somewhere, and now whenever I turn the fan on it blows all sorts of cr*p into the cabing - including shredded bits of really old newspaper! So I thought the natural place to start the investigation is finding the cabin air filter, but I can't even find it! Any ideas?