Heater and air conditioner

Asked by gu2181 Jan 13, 2020 at 07:18 PM about the 2003 Volkswagen Passat

Question type: Maintenance & Repair

My heater blows cold air after having heater core replaced.  The air conditioner works but when you come to a stop it blows warm air.  Do not know what the problem is or if they are related.  Any idea?

1 Answer


The heater issue is probably air in the cooling system. The AC issue may be low refrigerant or cooling fans that are not working.

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