2001 Dodge ram 1500 Sport rough idle?

Posted: 30 Jul 2013 06:02 AM PDT

I just changed the spark plugs and wires and everything ran fine that first day. After you drive the truck a few miles it feels like it starts to struggle. When you stop with the truck in gear the RPMs jump from 700 to 600 constantly. Not sure what it could be any ideas would be great.