Noisy 2000 Crown Vic

My 2000 Crown Vic with 185,000 miles on it has started making a rattling noise whenever I go over a bump or make a turn. Noise seems to be coming from front left side of car. It doesn’t start making the noise until I have driven at least 10 miles. If I let it sit for a couple of hours when it begins to make noise, it doesn’t start again until after going more than 10 miles.

Very odd. If no one here has suggestions, try at www.crownvic.net