Chrysler Neon 2000

Look at the revolutions of the vehicles come from factory, to move something to accelerate the car is not a solution, since the problem is present even if it is not scheduled, now the IAC as the classmates say it is responsible for regulating the release through other signals of other sensors, that is why you must buy its operation, the timely and finally the calibrated of it. Czech this first, in addition Czech that all filters are in good condition, and finally if you have the Czech Possibility the precion of the fuel pump, you have this and tell us, these are the steps have followed you do not jump them, because someone told you to happen the same thing and change the TPS and take it, have it step by step.

As Kikemec says, do it with a system, following the indicated steps. Another possibility that causes the minimum march to be unstable is a broken hose or any other erroneous air input.