Manifold pressure sensor in extreme cold

mikelupo

Member
Joined
Feb 22, 2024
Messages
46
Location
Gilford, NH
I want to know if anyone has experienced a sensor error in cold weather??

Yesterday I took my first cold weather flight since my HDX install. It was about 10 degrees F.
I have the Dynon EMS as well as the Dynon MP sensor. The sensor is attached to the engine mount tube. I can presumably rule out oil contamination in the sensor due to a vertical loop in the tube to prevent oil contamination to the sensor.
When I departed I was indicating well over 30” of MP. No way in heck that’s real. Once I leveled off at 8,500 feet I was full throttle and still indicating > 30”. Engine sound, RPM and fuel burn all where they should be in this config so I wasn’t fretting it.
After my third fuel stop in 40 degree temp, the sensor began indicating normally.
I’ve not de-cowled as I am transient, so I can’t inspect it yet.

Anyone else??
Still climbing in this photo…

IMG_8908.jpeg
 
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