so here goes, looking for some help to figure this out. my original 2008 2.3 duratec lost all oil and gave out at 249,012 miles, a friend installed a 2010 junkyard engine with 81,000. now when I start the engine it idles at about 2100 rpm and warms up, it idles bak around 950. When driving and i push the clutch in the idle rises, sometimes to 3000, What should I be looking at to fix this? any help would be greatly appreciated.
