Won't stay running while idling

Maintenance/Repairs
1

I have a 1998 dodge ram 1500 it won’t stay running while it idles what can be the problem

2

Too much to list in a short response. A few questions:

  1. ‘Check Engine’ light on?
  2. How many miles?
  3. When was the last tune-up?
  4. When was the air filter replaced?