I have a 72 MGB. The heater fan throws sufficient air but it is cold. What should I check or fix to get warm air?
You need to check the heater core, check if the water hoses are going to the inside of the cabin to see if the heater hasn't been eliminated. Some heater's are activated by a valve when you move the switch for this year you will need to look for a cable that opens the valve, check if this cable is hooked up to the valve and that this valve is working correctly. if need anymore help just write back