i had a cold start problem , read a lot of forum information on these mondeo problems , the car ran fine after first start of the day, it was fast smooth and no flashing heater plug light, no missfire or any other symptoms, new battery fitted last year and starter was spinning over no problem. changed cam sensor , cleaned out egr valve , checked turbo actuator ,no different on cold starting, i accidentally dicoverd the live battery terminal was getting very hot, it wasnt loose where it was crimped into the connector, i took out the battery , and solderd around the cable at the joint , hey presto starts first time now, so i now know that although my starter would turn the motor over for 20 mins or so when cold,it is not like the old days of diesal motors firing up on the slightest of turns on the starter, i hope this imformation might save someone the headache i had for weeks,voltage is critical with these motors ,check your connections ,