2002 Intrepid idling to low

Hello I have a 2002 Intrepid with 84K,2.7 Liter.The car runs and drives great,engine idles very smoothly but very low,in gear 600 rpm,in park between 7 and 800 rpm.I am leaning towards a possible TPS or IAC but I dont know dodge cars and I dont want too spend a bunch of unnecessary cash trying to fix it.Any help anyone could offer would be greatly appreciated and I thank you in advance.

they are supposed to idle that low, nothing is wrong with your car