HI all I have a 1994 ranger that i bought new it now has 250,000 miles on it.I live in Ohio and Ohio weather sucks never the same. anyway I'v been trying to track down why my truck wont start when it gets below 15 degrees out.found out this year if i put a heat gun up to the mass air flow sensor for a few mins. it fires right up.So i replaced it and it still wont start unless it heat it up first not as long as old one but still have to.Is there something else it it could be. O'ya forgot the first thing i did was take it to a shop they charger me 600 dollars to tune it and it ran better but didn't fix problem. Please can someone help me.