I needed to replace my car battery. I bought a Duralast Platinum Battery (part # 78-AGM). I replaced the battery (without using a backup battery source to maintain power to computer module) and now the temperature gauge reads cold (needle doesn't move from slightly below the cold position) AND both electric radiator cooling fans come on just moments after the car is started and then run continuously until the car is shut off. I tried disconnecting the positive battery cable to effectively remove power from the car and then reconnected. The problems still exist. Do you have any ideas? Thank you!