#2 Probe INOP on J model

[SpookyTex]

Looking for any advice. I flew from Ft Leavenworth to Pensacola and back over the last week, 5-5.5 hours per trip, and had some odd indications each time. On the trip down there, about 30 minutes outside Pensacola, the #2 EGT started going 200-300 degrees high on my EDM 700 and then dropping below average afterwards. It would do this several times within a second. It was around the same time I was beginning a decent so as I pulled the power back slightly, the indications went normal. There was no roughness in the engine and all other readings were fine, to include CHT. Once on the ground, MX checked it out and ended up cleaning both the injector, plugs, and probe.

On the way home, everything was fine until about 1.5 hours out of FLV (4.0 hours into the flight). I started getting the same indications and decided to land and have it checked out, but as soon as I started down, the probe failed and I had no indications from the #2 EGT. The EDM showed one dash in the middle of the #2 line, with 1, 3, and 4 acting normal. The #2 CHT showed fine and again there was no roughness or other indications so I decided that it must be the probe and continued to FLV, uneventful. 

This morning I started her back up and indications were fine. I flew around the flagpole a couple times and again, all indications were fine. My mechanic is going to check it out this week but I was wondering if anyone has seen a similar problem and what fixed it.

 

v/r

 

DP

[Cris]

Similar issue with a CHT probe & it turned out to be a loose connection at the probe. Sine I had already bought a replacement probe I changed it just in case.