Cars not overheatn wen in neutral......but still blowin just cold air thru the vents?

If anyone has disconnected any heater hoses, for any reason, they may have re-connected them in reverse, but other advice re coolant not up to full mark most probable cause.
 
Might be low level of coolant. When the antifreeze level is low the heat is the first thing to go.
 
it,s not overheating because the thermostat is stuck open. that,s why your getting cold air.
 
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