hi guys can any one tell me whitch code reader i need for my 2.3 L redg turbo deisel as having probs starting it for about a week tryed every thing on it with no avail ,new heater plugs ,cleaned connections, earth cable , the only other thing tuo guys say is the heater plug solonoid but carnt find one yet so i am looking to buy a code reader in case this helps now or in the future