Chrysler Repair: idling to high or very noise, chrysler voyager crd, 4 digit numbers

Question
sir,
i got chrysler voyager crd lx 2004. my problem now is.
THE IDLING IS VERY HIGH. I FOUND THAT  WHEN I PUSH THE PEDAL
CLUTCH.THE IDLING IS NORMAL.AND  VERY SMOOTH. WHEN I RELEASE THE PEDAL CLUTCH ,THE IDLING  BACK TO HIGHER OR VERY NOISE.
THANKS SIR.

Answer
mhel hermano,
The best way is to get a fault code readout of the engine controller. I am not sure but try the ignition key. Turn it "on-off-on-off-on and leave on" doing that in 5 seconds or less elapsed time. Then watch the odometer window of the cluster to see if the kilometer reading disappears and instead some 4-digit numbers preceded by a P appear. Let me know and we'll go from there. If that doesn't work, then a readout using a plug in code reader should get the code. A shop that services US cars should have such a reader.
Roland