esurds

Hey if anyone has ever done a swap like this before any help would be greatly appreciated. I have the motor in and hooked up with stock everything on the engine other than intake and header. The car runs but has some problems. It's running really rich and idles so low that I have to slightly keep the gas on to keep it running. Also it seems to be in limp mode because it's powerless. Let me know what you think. I've tried looking for codes but the method found on this site didn't work. I jump out that blue plug and the check engine light just stays lit.