Over the past week or so my car has been doing somthing that it has never done before. When I am cruising, no matter what gear I am in something the car seems to stall, or sputter, but only for about 1 second, sometimes it will come in little bursts but other times it will only happen once. Also sometimes the idle will dip low like it's going to die, but it never does, this only started happening when the stalling occured. Car runs great besides that, no loss of power or anything. I just did routine matinence, changed the oil, filter, and spark plugs. Anyone got any ideas whats going on?