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Esteemed a-fourians,
I have a temperature sensor for the temperature gauge, and a sensor for a new temperature alarm buzzer, on opposite ends of a t-fitting mounted on the front of the head, where the gauge sensor used to be by itself. The alarm buzzer now buzzes when the engine is warmed up, i have turned it off, and turn the ignition switch to restart it again. It doesn't alarm when the engine is running, only when I turn it on again when it's warm. Apparently the water gets hotter in the engine when it stops flowing through it. Although the alarm sensor is supposed to activate at 200 degrees, when it does activate, the temperature according to the gauge is only 170 degrees. Since the two sensors are 2 inches away from each other on the same t-fitting,why does this happen? I was expecting the temperature gauge to read a little cooler because it is no longer attached as close to the engine coolant flow as it was, and I think it is reading cooler, not much, maybe 10 degrees. I was not expecting the alarm to go off when the gauge shows the temperature is ok. The alarm sensor is by Aqualarm, part #20118. I did not purchase the moyer temperature and oil warning kit, because I just wanted a temperature alarm, but the fitting for the temperature sensors on the front of the engine is very similar. I disconnect the alarm when it goes off, and keep running, and all is well according to the gauge, so I haven't yet tried leaving the engine running with the alarm going to see if it the buzzer eventually turns off as the coolant flows through the block again. It probably would. I suspect I bought a temperature alarm sensor that is not accurate, and triggers the alarm before it should.
I just thought of another possibility; the t-fitting is mounted vertically, with the alarm sensor on top, so it doesn't interfere with the oil fill port. I see in the image of the moyer kit that the fitting is turned so it's horizontal. Maybe heat rises to the top of the fitting, creating a significantly higher temperature for the alarm sensor than for the gauge sensor. Does this sound likely? Or should the orientation of the t-fitting not make any difference? I could try reversing the sensors, or turning the fitting so that it's horizontal, but it could be a waste of time. I think more likely I need to get a Cole-Hersee sensor like the one in the Moyer kit, and see if it's any more accurate than the one by Aqualarm. The engine is fresh water cooled with the heat exchanger sold by Moyer. Your thoughts, please?
I have a temperature sensor for the temperature gauge, and a sensor for a new temperature alarm buzzer, on opposite ends of a t-fitting mounted on the front of the head, where the gauge sensor used to be by itself. The alarm buzzer now buzzes when the engine is warmed up, i have turned it off, and turn the ignition switch to restart it again. It doesn't alarm when the engine is running, only when I turn it on again when it's warm. Apparently the water gets hotter in the engine when it stops flowing through it. Although the alarm sensor is supposed to activate at 200 degrees, when it does activate, the temperature according to the gauge is only 170 degrees. Since the two sensors are 2 inches away from each other on the same t-fitting,why does this happen? I was expecting the temperature gauge to read a little cooler because it is no longer attached as close to the engine coolant flow as it was, and I think it is reading cooler, not much, maybe 10 degrees. I was not expecting the alarm to go off when the gauge shows the temperature is ok. The alarm sensor is by Aqualarm, part #20118. I did not purchase the moyer temperature and oil warning kit, because I just wanted a temperature alarm, but the fitting for the temperature sensors on the front of the engine is very similar. I disconnect the alarm when it goes off, and keep running, and all is well according to the gauge, so I haven't yet tried leaving the engine running with the alarm going to see if it the buzzer eventually turns off as the coolant flows through the block again. It probably would. I suspect I bought a temperature alarm sensor that is not accurate, and triggers the alarm before it should.
I just thought of another possibility; the t-fitting is mounted vertically, with the alarm sensor on top, so it doesn't interfere with the oil fill port. I see in the image of the moyer kit that the fitting is turned so it's horizontal. Maybe heat rises to the top of the fitting, creating a significantly higher temperature for the alarm sensor than for the gauge sensor. Does this sound likely? Or should the orientation of the t-fitting not make any difference? I could try reversing the sensors, or turning the fitting so that it's horizontal, but it could be a waste of time. I think more likely I need to get a Cole-Hersee sensor like the one in the Moyer kit, and see if it's any more accurate than the one by Aqualarm. The engine is fresh water cooled with the heat exchanger sold by Moyer. Your thoughts, please?
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