...when I start it? When I start the car up the idle is high and keeps increasing as if I'm feeding it gas. I've checked the vacuum lines and they all seem good. UPDATE: I wasn't able to get access to a scanner but I did manage to get the code off the computer. It is P0068 which says its a MAF/MAP sensor throttle position correlation problem. Am I reading this correctly in taking it that the MAP sensor needs to be replaced or is it still likely to be the throttle position sensor as Dodge Man said when he answered my original question?