Hey guys, this is my first post, but I have tried searching around. My wife's 2003 Focus ZE3, has recently developed an awfully loud noise when her car is cold, this will continue until you drive around for 45 minutes, which only makes it a bit quieter, but not fully gone. It's accompanied by a shaking, that vibrates the whole dash. Driving will lessen the noise, or switching into another gear will lessen it for a second.
There isn't a CEL, or any other indicators. There doesn't seem to be a loss of performance either.
Work Done: Oil Change, and Filter. New Air Filter, New Tires (Few months back), New PCV Valve, Fluids topped off.
She sits right at 70k miles. Any thoughts? I apologize if this is something you guys answer a lot.