I'm not an expert on car's,but my goat is idling really strange.It has sporadic rough idle. It idles smooth for a few seconds then feels like someone lightly shakes the car, then runs smooth again. I'm sure it has to do with the timing,but no service engine light yet. Has anyone else had this problem? I'm going to take it to the dealer,as much as I don't want to,cause they'll probably screw it up worse. Is my goat gonna die on me?