What should temperature gauge show when normal

Hello, sounds more like one of your concerns could be related to sufficient air flow, such as from the vehicle moving at speed or the fan turning on properly when driving slow or stopped. It could also mean there is insufficient coolant flow, such as with a thermostat that is stuck closed or only slightly opened. Hands on testing is needed to see what the cause of the problem is. Use this link to find some shops near you that can help with your concern: www.repairpal.com/repair-shops