Ford Repair: 5.0 cold starting problems, dual tanks, vacuum leak

Question
1988 ford van  dual tanks  5.0 fuel injected  i change a few sensors last year to cure  a high idle  was fine til it got cold now i crank fine but find it very hard to start like a choke is not open on a carb when it does start  if it runs for as little as 5 min  its fine all day until i let it sit again any ideas ???95,000 oroiginal miles  second owner

Answer
dirty throttle plate/dirty idle motor/bad coolant sensor/dirty injectors/vacuum leak
their are a lot of possibilities and it may take testing to figure it out and the comment (i change a few sensors last year to cure  a high idle) says you will replace parts without being sure that is the problem so i would suggest taking it to a reputable garage and letting them diagnose it then if you can save some money by repairing it  yourself go ahead but keep in mind if i diagnose one at the shop and i repair it and am wrong i can eat it and recheck it  but if i diagnose one and the customer decides to repair it their self and it don't fix it i won't recheck it for free. good luck.