when i'm driving my 2004 srt 4 when i go to shift sometimes the rpm's will hang at 2000 rpm's and wont drop till i put it in the next gear and let the clutch out and i was throwing a code so i checked it and it was a crankshaft sensor failure so i replaced that and its still doing the rpm hanging but no codes now would anyone have any suggestions to what this could be or what i should try to fix this annoying thing but other then that the car runs great