Exhaust pipe heat shields. Metal straps rust out and they flap around with the exhaust vibration. High probability.Hi all, I have started to notice a rattling sound when ever I put my foot on the gas to accelerate from a complete stop coming from drivers side..Any tips on what it could be, and possible repair advice would be very helpful. 2005 Off Road 115,000.00 miles. Thank you so much for all the previous advice, this is my go to place for help.