Q: Van engine temp. wont rise, Van blower temp to cool. on 2003 Chrysler Town & Country

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
Its 10 deg. outside. I let the van warm up take it for a drive and the engine temp. barely rises above "C". It was doing this even when it was 35 deg. out. I have replaced the thermostat topped off the engine coolant. There are times the engine temp will come close to middle but as soon as you start driving it returns to "C". I have read it could be an air pocket or the heater core. Im lost.
(1) Answer
It could be an air pocket. Or you could have replaced your thermostat with too cool a unit. Too cool a thermostat opens too early and never allows your engine to get to operating temperature. Verify the one you installed is the right temperature.