Fitted new engine to my 156 now engine managemt light stays on & misfires
About two weeks ago now my cam belt went on my alfa 156, 1.8ts, 52 plate, after lots of calls to garages and getting quoted silly prices, i then decided to buy a second hand engine from a scrap yard. Me and my brother fitted the engine and it runs, but, the engine management light stays on, there seems to be a slight misfire and when i get to 60mph she begins to fight with going above that speed, she missfires and will not go above, which is a huge problem when on a motorway. I have changed the spark plug and the thermostat whitch has sorted the temperature guage issues i had but the missifre is still there and the engine management light is still on.
Any hint, tips or suggestions, would be greatly appreciated.