My corsa is not accelerating properly the engine judders for a few seconds then its fine it happens quite a lot until im driving at high speed then it seems fine,my traction control light comes on,and engine management light flashes for a few seconds,had the car to a garage who replaced spark plugs and coil pack it wasn't as bad for a few days now its back to the same problem garage cant find problem with it,been on diagnostic but no problems came up
Replacing the plugs and coil pack USUALLY fixes this problem . Could check wiring / plug to coil pack . I have heard of non genuine Vauxhall coil packs failing . If not that you could check / clean MAF . If management light on it should normally store a fault code which would be retrieved when scanned with Tech 2/3 .