[Ahriman]

so i have had my 04 RL for a little less than a week now, and im starting to notice a few things, and i was wondering if these are normal, or if i should get them checked out.

the one bothering me the most, is the idle... from inside the car it seems to be running smooth, but when you pop the hood it seems to me to idleing a bit rough, with a little bit of a rattle. I have seen others on here speak of a "can of marbles noise" ... is this the same noise, and is it normal, or should it seem to run smooth inside the engine compartmen as well?

also, yesterday i was sitting in a friends drive way reving the engine... not hard or anything, just trying to hear how the car sounds. then when i was driving away the car started to act crazy as fuck... it was bucking in first, and then in second it seemed like i had no power at all, almost as if it was only running on two cylinders or somthing. I pulled into a parking lot, turned the car off and poped the hood, but didnt find anything unusual(not exactly sure what i was looking for anyway). but when i started it back up and drove away, it was fine as if nothing had happend. This is kinda of alarming for a car to do that i just purchased last friday, and only has 20k miles on it... any ideas what might have caused this?