I'm having a weird problem with my gauge cluster. Out of nowhere it started acting up. The tach will jump between 3000 and 4000 rpms randomly while the engine is at idle. It seems that since 3000 is the "idle" point it goes up from there when driving. Also, when starting the gauge sweep occurs at a very slow rate in comparison to normal. I'm guessing this is a faulty connection to the ecu, but i'm not sure and I don't know where to look. Any help is appreciated. Thanks!