Hello,can't figure out why this caravan with the 2.4l engine has a poor idle and stalls when coming to a stop unless pressure is kept on the gas pedal.engine runs great except for this.tested the tps,and seems fine.also tested the map sensor and replaced,along with the iac valve.did a compression test,and #1 read 196psi,and the other 3 all read 200psi.there are no codes,not even stored codes.i am thinking of pulling the throttle body off and thoroughly cleaning that.any other suggestions greatly appreciated.