Hi all new here and need help with my 56 plate grande punto active 1.2 8v recently had the flexi part of the exhaust replaced due to a hole. Since then my em light has come on had diagnostics done showed up I had a fault with the coolant which is getting fixed on Thursday but for the past week when I start the car it makes an horrendous noise then cuts out it does this a couple of times then it starts??? also feels a little juddery at first as day goes on its fine. I'm getting frustrated as it's one thing after another just now please help thanks.