Hey, I have a 2004 Ford focus wagon 1.6 petrol on 200k miles. On cold starts the first time pulling away there is sometimes a metallic scraping noise. This noise always occurs on the exit ramp of my buildings parking lot (uphill). After that it's gone. It kinda sounds like a single fanblade that's scraping because of the interval, but having disconnecting it made no difference. Any idea what it could be?