Thanks, I just took a break from working, and did the Colt .45 mod but only had a 1/8" drill bit laying around, so I went with that. If it still causes issues I'll make another restrictor with a 3/32" hole.
My symptoms were seen for the 1st time yesterday:
Coolant level is full, but morning temp was 58*F, and after driving for 40 mins at 50mph, the coolant temp (per Torque app) wouldn't go over 147*F, and the dash temp gauge sat at zero.
In the afternoon the ambient temp was 84*F, and once the coolant temp passed 160*F (and kept rising to ~200) the "engine hot" alert/message turned off, and the dash temp gauge came online.
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