OEM head gasket ordered and ARP studs ordered. Head gasket replacement soon! hope this is it. I am running out of things it can be. Also going to wire the cooling fans to the ECU. the fiat uses a thermo switch in the radiator. Figured if honda wants the ECU to control it, why not. Looks like 2 wires to the plug. guessing those connect to a Relay to give the fan power. Correct? now I just need to see if I still have the other end on the honda I pulled the engine from. to make pluggable, rather than hard wired. Run those wires 6-7 feet to the front, hook up a relay and BAM I should have the fans working. I am also wiring in a bypass to I can manually turn it on just in case.