Strange thumping....................

I have noticed a strange thumping right under the driver's feet as I'm driving. I crawled under her, but could find nothing that would cause the noise. Any Idea's?:runaround:

check the sway bar link -

the rubber grommets tend to wear out. the complete kit is $9.99 ea at AZ , easy do it yourself repair
do both sides at the same time

Are to talking about a single thump shortly after you start the engine (antilock brake test), please describe when this happens and provide as much detail as you can.