bearing

Soooo, I recently (last 4ish months) did my front wheel bearings, brakes, basically ive done the whole bottom end so far. after doing the bearings all noises and shaking stopped, however a "distant" growl started after about a month and has gotten worse by the day. I had my mechanic under...

180k miles, started hearing a slight squeak coming from the front of the engine when running, almost sounds like a bearing or something, not sure if it is radiator fan or other. any ideas on what it could be or how to troubleshoot to a specific component?