Quote Originally Posted by 71firebird400 View Post
1. Operating temp is determined by the thermostat, not the radiator.
2. Heat will only come out of the footwell vents and defrost; A/C will only come out of the dash vents. Have him change the vent selection. Viper quirk.
1. Right, but if the radiator is more efficient, won't the operating temperature be reduced?
2. I should have mentioned that, he said he didn't feel heat coming out of any of the vents, including the defrost and footwell.