Originally Posted by
captiva
No, because I don't have an actual heater problem, when I drive in town stop start etc. the temp comes up to NORM and the heater works. When I drive out on the highway 120 kph the temp gauge drops down to cold, you can watch it do it, and then the heater reflects the temp gauge. Hope that explains it.
So when the control is set to hot the heater temperature goes colder along with the temp gauge going down while you're going along at 70mph...
How odd
It's almost like the coolant is being cooled too well.