Right answer wrong part. It was the thermostat stuck open.
If you know that you must know why? Why then, is it related to having to enrichen the fuel mixture to start an engine?
So that Dodge Durango has no engine temperature gauge? LOL
Gasoline doesn't vaporize readily in a cold engine and tends to cling to the cold surfaces..So an over rich mixture is required...This is less of an issue with port injection than a "wet" intake manifold using a carb or throttle body injection..Some enginners claim part of the long life of modern engine is due in part to the lack of crude chokes washing down cylinders with fuel...
79 T140D, 96 900M Ducati ....On a bike you can out run the demons..