Its a 03 with 12k miles on it. Recently changed oil and did maintenance, etc. The idle is around 1600-1800 rpm, a little too high. So I lowered it to the manual specs, which is 1300ish rpm. When I do that, the idle jumps erratically up and down. Also, if I leave it at idle, the response is sluggish until I hit over 2500 rpm and then the power kicks in. None of this happens if the idle is over 1600. Is this normal or my engine likes to idle high?