Q: My van is over heating, what part do I need to replace? on 1994 Nissan Quest

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
When I'm driving, the gage stays at cold, goes slowly to "M",
stays there for a few minutes; than goes quickly higher. After that smoke comes out from under hood.
(1) Answer
Need to first determine WHY the van is over heating. Here is a check sheet to help you: