Originally Posted by josephd
My Mechanic and I have gone through this car with a fine tooth comb, and came up with nothing. What makes me insane, it is intermittent. The noise in my Focus started around 77K. If I find out what it is, I will be happy to let you know.
After talking with a few mechanic friends of mine, I have it on good authority that the cause may be a loose caliper slide...er something. This would allow the caliper to rattle at high speeds, contacting the rotor and causing this noise. I'm gonna check to see if that is indeed the case when I get off work today. *fingers crossed*