Hi got a 96 V2 scoob and engine light comes on and goes off when it feels like.The light does not flash to give any codes,but the car runs as if it is holding back and judders if you try to give it some beans to wihch I dont do now.When the light goes off the car runs sweet as a nut,anyone with an idea?.Is there a check you can do for the single coils?.Thanks for any ideas in advance.