Hey folks! I purchased my first Jeep sort of out of necessity. Ended up with a problematic ‘07 Commander. Didn’t really know how problematic it was until I got about 5 miles down the road. Immediately had buyer’s remorse! I test drive it and looked it over really well....I thought. Called the guy I bought it from noting problems maybe 15 minutes after exchanging the cash hoping he would be understanding and swap back (I even offered a couple hundred for his time). Long story short, I’m stuck with this thing. I love the idea of the Jeep, just didn’t anticipate the problems. So far (2 weeks in) I’ve replaced the water pump and the radiator. It had a leak in the radiator that I didn’t notice until I got home. It was at the top and only spontaneously spit out coolant. Figured while I had it torn apart, may as well replace the water pump, to avoid it in the near future. Anyhow, it had this grinding noise as I started it up, that went away as far as I could tell after it heated up a bit. It came with a K&N cold air intake that he blamed the noise on. I always heard they were noisy, and took his word. Finally, I got tired of the noise and wanted to see if changing back to a stock intake would fix it. I removed the CAI and started it up with a bare throttle body. Same noise. It doesn’t really seem to affect performance, but I know it’s not normal. Has anyone else run into this? After further listening and attention, it doesn’t seem to go away completely. It’s the kind of noise that makes you cringe a little bit. Here it is at startup with a little throttle toward the end.