Jdm_Eg686

My car was stolen a couple weeks ago and it was found with my complete jdm front end missing. But now there is a problem with my idle that wasnt there before. Its an automatic transmission so when i start my car and when it is in park or neutral, the idle runs high and low until my car warms up. I have been told that it could possibly be a vaccum leak. I have looked at every vaccuum hose in my engine bay and havent found the source. If there is anybody who has had a problem similar to mine, CAN ANYBODY HELP ME PLZ!!!!