Hello all. I should add that I am not a mechanic, just a guy trying to determine if the problem is something I can tackle or if I need a pro. A faulty coolant temperature sensor seems to make sense to me. What if the sensor is failed in the warm engine mode. Then, when I try to cold start the engine in cold weather it tries to start but quits because the enrichment is not being provided (too lean). BUT, after a couple of failed attempts to start the engine there is now too much fuel in the cylinders hence the need to start the engine as if it is flooded. Does this seem like valid thinking?