ok guys, heres my big prob. my car sounds like its backfiring and bogging when at idle or whenever i cum to a stop. when u look at the engine and hear it it sounds normal and its not surgin or anything. but u can hear the backfiring and bogging cumin outa the exhuast. also the rpms fluctuate between 800 to 1000 back and forth then to 1200. i cleaned the iac and checked the fast thermo and all vaccum lines. what else could this be?????
thanks,
j