Hi Guys, I have a 2009 1.6 Zetec Focus which has done around 25K. I am having a problem at the moment. Whenever my car is stationary either with the clutch down or in neutral, there is an intermittent small rumble and the engine idles slightly, it is happening more often so I am a little concerned. Just as a side point, when the car rumbles, the interior dash lights also dim slightly. I have asked for help on other forums with no luck. The car drives fine at the moment, but I am just abit worried that something bad is going to happen. Any help would be much appreciated. Thanks very much for your time.