Testing Oil Temp Sensor

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Posts: 28
Joined: Thu Mar 21, 2013 12:00 pm

Testing Oil Temp Sensor

Post by revenson »

My Oil Temp reads 15 degrees above OAT when in my hangar with plenty of time to stabilize. That doesn't bother me if it reads oil temp correctly in flight, but I'd like to check it.

1. Can I just remove it from the engine and place the probe in boiling water and compare the EIS reading to a thermometer? Or do I need to provide a ground for the probe?

2. Can the GRT oil temp probe be calibrated if needed?

Roger E., Tucson, AZ
Posts: 432
Joined: Mon Mar 11, 2013 6:34 pm

Re: Testing Oil Temp Sensor

Post by Bobturner »

Yes, the probe has to be grounded Just use an alligator clip.
If I recall correctly, it will never read less than 87 F or something, so don't compare it to OAT when the engine is off or cold.
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