"Robert M. Gary" wrote:

Does having the probe go on and off line during flight a typically
failure method for JPI EGT probes?

I don't have a problem with my JPI EGT probes, but I have been experiencing
similar, intermittent problems with my JPI RPM probe/connection/??? over
the last year.

This shows up as a sudden drop of the RPM on my EDM800 down to zero, then
back up, or down to some unreasonable level, such as 1200, then back up
perhaps ten minutes later.

The mechanic has checked the connections twice and replaced the wire once
but it still is happening. Either it is vibrating loose or perhaps the TKS
anti-ice fluid that I have been running all winter is corroding the
connection?


--
Peter