Hey ya'll,
Still having trouble with heat at highway speed. Just collected more data/ as follows. With mono valve two pin connector disconnected, I still lose heat at highway speeds but gain heat as I slow. The slower I go the more heat.

Does this rule out the mono valve coil/magnet? I'm starting to think thermostat, but engine temp is steady at 85C.

Was 18F this morning. What to do/What to do

Pat