Been a while since I last posted but here goes. 1996 120 hp Force by Mercury on a 17/2 Fischer. Impeller changed every year and water pump inspected. Had been running the stock thermostat and also have always changed it yearly. Fresh (maybe brackish) river water only. Was advised by me Mercury mecahic to run a hollow stat. No problems with the exception of water pressure reading went from 15/17 psi wot to about 9 amd idle(800) about 3 lbs. but expected this change. Had this problem even before the hollow stat change i.a. at wot for about 2 min. the buzzer(or alarm) goes off till I power down to idle. Measured temperature with thermometer at the "pee hole" it it never reads higher than 125 degrees and I can rest my forearm on the block with no problem. I believe it's in the sensor, the only one I see held into the block with a spring clipI would either like to check, replace, (which I haven't been able to locate,HELP) or possibly connect a workable auto style temp gauge. My water pressure gauge is connected on the very top of the block and can't see any additional location for a temp gauge. Any help, instruction or advice would be greatly appreciated.
thanks
waterwhiz
thanks
waterwhiz