75% of the time the needle moves between 80 to 120, 100% of the time if the air conditioner is on, 100% of the time if I am in stop and go traffic. It has never overheated, but I don't push it. Thoughts before I go blindly to the repair place? 109K overall with 45K on rebuilt engine. Tx.

 

When was the last time you had a coolant flush performed?