2014 GTi, 2L 4 cylinder, 50k miles, auto trans, bought new and never had any problems. Cranks slow but starts then stalls after a few seconds. Let it sit for a while and then it starts and runs fine. Dealer put a battery in. Ran fine for 3 weeks and same problem. Dealer replaced the fuel module. Problem still happens. Never cuts off on first start up of the day. Never cuts off when driving. Doesn't kick a code and hasn't done it while with the dealer. Any ideas??