Only in the last few days I've noticed the following: when I engage my main beam, the dashboard display dims for a split second but it is noticeable, which is why it caught my eye. Also, when I'm at a standstill (foot on brake, car in "D") and the engine is fully warmed up, the engine is revving at 500-600 (normal for car, never been a problem before) but the car feels like it's about to cut out, engine is a bit "lumpy", dashboard dims slightly, goes bright again, dims, etc. Can't think of any reason why this should happen all of a sudden.
Any thoughts?
Any thoughts?