New to me 09 prostar

[Mr Hagg]

If it were mine the first thing i'd do would be check the history on insite. if the number was ok id do the egr tune up as explained by Rawze. He has many youtube videos that will show you what to do. If #'s are high then Id be looking at the mandate fix........ If you are in Georgia we would be glad to look at that for you and IM sure gearhead or unilevers would do the same.