My 2007 Nitro 3.7 started making this weird noise a couple of months back. At first I thought it happened when I would accelerate but later it happened when the car was completely stopped. I'm not really sure how to describe the noise, however, I was able to record the noise, with the hood open, as it happened. I'm definitely no mechanic so any help would be greatly appreciated. Attached is a zip file that contains an .m4a audio file.
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