Yesterday while driving I heard metal scrapping the road from under my car, could a part have fallen loose from underneath my car?
I did pull over to look underneath, and it looked like a little metal box hanging down
between the front wheels. Could it have been something from the road that caught under
my car or a part coming loose? Are there any parts like that that are used under a Sable?
Most probably the catalytic convertor heat shield broke loose. They rust at the welds and fall off. See if you can work it loose, if not, get a large hose clamp and wrap it around the shield to secure it. Don't do it though when the exhaust is hot, you'll burn yourself.
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