My 1997 Chrysler Sebring LX, with 2.5 V6, runs fine till it warms up. After it warms it idles fine but It developes a bad hesitation with acceleration. Past the point of hesitation car runs fine. NO Codes I have replaced: fuel pump, filter and regulator, MAP, IAT, EGR, Crank sensor, distribtor, cap and rotor, throtle sensor, PCM (computer), Pelliam and intake manifold gaskets, air cleaner. Do you have any ideas of what is wrong?