I have a 2004 BMW X3 3.0i and it runs rough and kind of sputters when idling. When stop @ a red light it feels as though it's going to die, it idles under 1 rpms. It also gets very bad gas mileage. I was told I need a new cabin air filter and that it may help me get better gas mileage, do I also need to change my other air filter too? So two questions, why is my car idling rough and how can I get better gas mileage?
Saturday, January 15th, 2011 AT 6:40 PM