Our 2005 Infiniti G35 is channelling the ghosts of mouses past. It’s particularly prominent in colder weather and as the engine warms up. The volume is tied to both the accelerator and turning the wheel. It lasts for a few minutes, usually minimal within one or two miles and completely gone within five or so. Once the car has been parked for a few hours, it’ll return at the beginning and diminish again with some driving.
Is this the type of thing that is likely to cause the engine to crap out some morning or cause some sort of catastrophic (expensive) failure while we’re driving? Or is it just an annoyance that we ‘should’ take care of eventually, but don’t really need to rush. Or is it the more likely case where it could be either and we won’t know until a mechanic is looking at it?