Update: I had a few days off around New Year's. I described the noise and made an appointment at an indie to bring the car in. Lo and behold, noise disappeared. I circled and circled, on the way to the shop to get it to come back, no dice; the mechanic effect. Indie did not want to open stuff up for a noise that is now gone... Maybe it will come back in warmer temperatures. Maybe the offending gravel dropped or got ground down. Who knows?
|