I am diagnosing high oil temps on my 9A which I did not build. It appears that some sensors are located at the oil cooler, but not on mine. I can't find an oil temp sensor anywhere. Where else can oil temp be sensed on an O-320? What does the sensor look like?
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Alton DeWeese
N526RV RV7A Tip Up, IO360 180 W/Hartzel BA prop.
Flying ~950 hours since Aug 2010
N4IDH
Construction Log
?The secret of getting ahead is getting started. The secret of getting started is breaking your complex overwhelming tasks into small manageable tasks, and then starting on the first one.?
It's also the only thing I can think of (off the top of my head) on the BACK of the engine that has 2 small wires coming out of it. The wires lead eventually to whatever displays oil temperature. At least it's that way on my engine
Mine only has one wire.
Picture borrowed from AFS manual
__________________
Alton DeWeese
N526RV RV7A Tip Up, IO360 180 W/Hartzel BA prop.
Flying ~950 hours since Aug 2010
N4IDH
Construction Log
?The secret of getting ahead is getting started. The secret of getting started is breaking your complex overwhelming tasks into small manageable tasks, and then starting on the first one.?
OK. This helps. I was looking for a 2-wire thermocouple device. Maybe I can test this sensor by placing it in boiling water and seeing what the gauge says. I want to make sure the sensor/guage is telling the truth before moving onto a larger oil cooler or other solutions. Doug
I removed the sensor and put it in a can of water with a good thermometer with wires still hooked up. I then compared the gauge readout with the thermometer as I heated the can with a torch. The gauge reads 240 when the water was 190. I think I found my problem. The only question is sensor or gauge? Maybe others with high oil temps have this issue.
Where is oil temp sensor?
Linear Mode
