EGR problems,weird sounds and sluggishness?

okay i have a 4 cyl. 2001 dodge caravan tester reads small and large evap leak i figure okay thats the gas cap it also reads egr leak okay can that be the reason my van is sluggish and makes weird sounds it sounds weird on acceleration and sluggs its way in to 40 mph and what all should i be changing when it comes to the egr.......?