1995 175 fast strike/Stratos 19ft.
Bought the boat 2 weeks ago and I'm a noob to boats -
I wasn't getting any horn when grounding the temp sensors as people here have suggested I should, so, I was wondering wether it was my sensors or possibly the wiring. So, I pulled the sensors and did a test in the kitchen. First I tested the port sensor (#0584152) and I know it has two wires, the white one for the fast start and the other presumably for a high temp alarm or shutdown. I figured the fast start temp range would be low and sure enough I got continuity with my multi-meter at about 120* under the sink using a digital thermometer. Then I went to the stove and used boiling water to test the brown wire figuring it was the overheat and needed more temp. However, I couldn't get continuity at full boil. So, I put it flat down on the glass top stove on low, my thermo sensed about 240* and still nothing.
Then, I took the starboard sensor (#0584589) which is thin and flat and put it flat on the stove, after a few seconds, sure enough I would here a click and it had continuity. That switch is obviosly a simple bimetal swith and it was snapping on around 220*.
My question is: is the port sensor a different type of sensor like a "thermistor" for BOTH low temp and high temp for the fast idle and the "overheat" safty alarm? and, if so, why did it give me continuity on the low temp (white wire) but never on the high temp (brown wire) even though I probably got it up to 240*?
Maybe it's in the ignition to be processed with resistance on the port sensor and simply open closed on the other (starboard)... I don't know. I'm hoping one of the more learned people here can shed some light on this.
If my sensor's bad then so beit but I don't want to buy a new one for no reason as they aren't cheap!
Again, grounding out these sensors has absolutely no effect on alarms or horns. However, when I turn the key on a little horn sounds once. Self test I guess.
Also, when I reinstall these sensors should I use some heat sink grease at the head of them? Makes sense as they rely on heat transfer to work and I would certainly like to know if the engine is overheating sooner than later!
Thanks!
Bought the boat 2 weeks ago and I'm a noob to boats -
I wasn't getting any horn when grounding the temp sensors as people here have suggested I should, so, I was wondering wether it was my sensors or possibly the wiring. So, I pulled the sensors and did a test in the kitchen. First I tested the port sensor (#0584152) and I know it has two wires, the white one for the fast start and the other presumably for a high temp alarm or shutdown. I figured the fast start temp range would be low and sure enough I got continuity with my multi-meter at about 120* under the sink using a digital thermometer. Then I went to the stove and used boiling water to test the brown wire figuring it was the overheat and needed more temp. However, I couldn't get continuity at full boil. So, I put it flat down on the glass top stove on low, my thermo sensed about 240* and still nothing.
Then, I took the starboard sensor (#0584589) which is thin and flat and put it flat on the stove, after a few seconds, sure enough I would here a click and it had continuity. That switch is obviosly a simple bimetal swith and it was snapping on around 220*.
My question is: is the port sensor a different type of sensor like a "thermistor" for BOTH low temp and high temp for the fast idle and the "overheat" safty alarm? and, if so, why did it give me continuity on the low temp (white wire) but never on the high temp (brown wire) even though I probably got it up to 240*?
Maybe it's in the ignition to be processed with resistance on the port sensor and simply open closed on the other (starboard)... I don't know. I'm hoping one of the more learned people here can shed some light on this.
If my sensor's bad then so beit but I don't want to buy a new one for no reason as they aren't cheap!
Again, grounding out these sensors has absolutely no effect on alarms or horns. However, when I turn the key on a little horn sounds once. Self test I guess.
Also, when I reinstall these sensors should I use some heat sink grease at the head of them? Makes sense as they rely on heat transfer to work and I would certainly like to know if the engine is overheating sooner than later!
Thanks!
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