ok so i brought in my b16a head yesterday to get it shaved, while disasembling i twisted off a brass sensor in the head. The sensor is on the left side of the head (distributor side) there are 2 coolant hosed then 2 sensor plugs and in the middle there is a small brass pin that 1 wire connects to, this is the one that broke off. Im having some trouble finding out what this is so i can replace it. Anyone know what im talking about? its either a ground or a water temp sensor i think but i need to be sure. thank you