Thanks Bob
I have tested the probe by getting the voltage between the inner tube and the outer tube. Joel at Centroid said the voltage is too high and the internal regulator is bad.
I sprayed some carburetor cleaner in the tube to see if maybe it has gunk in the tube causing the inaccurate reading and will test again today.
I thought someone on the forum may have replaced their probe with a different manufacture probe.
Someone on this forum may have the technical knowledge to determine which probe will work.
Thanks for the reply
JimJ