Hi, seem to have an issue with coolant temps. Normally let the car warm up before driving(coming off of cold start). But seemed very long this morning. Was driving for about 15mins and needle moved up only 2 increments. On the drive home it did manage to get up to quarter of the way through, but that was it. I am getting warm air coming through vents which leads me to believe this is a thermostat issue can anyone shed any light on this