The factory installed Turbine Inlet Temperature gauge in my 1997 252 Encore has developed the palsy. It used to be steady as a rock and agree with the JPI gauge but lately the needle swings wildly. I've replaced the probe and had the gauge rebuilt to no avail. I can't find any problem with the wiring (chaffing, ect).
Any ideas on how to troubleshoot this?
Thanks
Short youtube video of the gauge in action
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