Hi,I just bought a boat and was idleing around fishing for about an hour and the heat sensor went off. I put it in neutral and reved it up and the sensor went off.I put a new water pump repair kit in{which the old impeller looked ok} When idleing there is water coming out the 2 holes that say water flow but when i give it more throtle in gear there is no watwer coming out the 2 holes, I did use the boat after replacing the water pump and the sensor never went off.I am wondering if there should be water coming out the 2 holes when running wide open,and if so where should i look next. Thank you