Mine was actually a moron who changed my spark plugs didnt set the intake manifold on correctly, caused a major problem that 2 different mechanics couldnt figure out. I went through changing the Throttle Sensor to thge MAP sensor then it was my alternator. All it was was the damn manifold wasnt on correctly! Crazyness

 

yeah just what I said a vac leak

 

I have 2006 Chrysler Pacifica. When I'm in park my rpm jumps up to the one. First my mph was jumping but I changed my alternator and now it's working properly. But now I'm rpm is doing the samething. What can be the problem?