My Skyview #2 EGT has recently
started to indicate wild temperature swings—several hundred to two thousand deg F—before the engine starts. But after start, it indicates reasonable temperatures in line with the other three from taxi to run up to takeoff, climb, lean, cruise, landing and shutdown.
Just under 120 Hobbs hours on the engine and probes. Probably connector issues to check next time the cowl is off. Just wondering if anyone else has observed anything similar before probe death?