Cooling issues 69 Dart GTS 340
turn off engine temp climbs
Normal.
Under what circumstances?
What is the normal temperature driving at 35 mph or more for at least half hour, and what is the temperature range when idling?
Fan shroud helps at idle and low speed
Not holding rated pressure will cause a lower boiling point.
Certain idle settings of the timing and fuel/air ratio but more heat into the cooling system. Some emissions era vehicles had coolant temperature overides so this wouldn't get out of control. Don't think that was used in '69.
I wouldn't start with this as the cause since if it was a problem, it would have been a problem in 1969 when the car was new. But definately don't want it to have less timing or leaner mix than the factory specs.
