I changed my caravelles coolant today and when it was all nicely bled i thought i'd try the heater out and noticed the heater fan has started making a noise like a kid riding a bike with a playing card in the spokes (remember doing that as a kid so your bike sounded a bit like a motorbike and annoyed the hell out of that old woman who used to live opposite?).
It sounds like something is in the fan but i can't see any way anything could get into it. There was nothing on the dash that could have falled into the vents either.
Do i just chalk it up to a coincidence or is there any other reason?
