Over heats while stopped - 1991 Dodge Dynasty

Laura, check if the fan is working. Also check coolant levels.

sounds like heater core may need to be cleaned... volks wagons have heating systems that sometimes do very strange things for no apparent reason....

What kind of car? What color is the oil? Is the oil grey and foamy or white and foamy? If so its a head gasket.

check your radiator level, as stupid as it sounds my 01 celica didn't have heat for 2 years. I was thinking it was the heat flap or something because when I drove the heat would start working and when I stopped it would stop working. Yesterday the car overheated so I checked the antifreeze and added about half a gallon. The car stopped overheating and as a side result the heater started working normally again. I did head slap and went on with life. Most vehicles have the heater core low to the floor but in the celica it is actually higher than the motor which means if fluid is at all low it won't work as it turns out.

make sure you dont have a vacuum line off under the hood, going into the firewall, or to a control valve that shuts off the hot water to the heater

LOOK FOR BLOWN WINDOW CIRCUIT BREAKER.YOU HAVE A SHORT IN WINDOW SWITCH OR BAD WINDOW ELECTRIC MOTOR.YOUR HEAT PROBLEM IS A STOPPED UP HEATER CORES.THE STOP LEAK STOP ITS HEAT.THE STOP LEAK HAS STOPPED OR PLUGGED YOUR HEATER CORE SO COOLANT CANT PASS THROUGH IT.YOU GOING HAVE TO FIX RADIATOR LEAK AND REPLACE HEATER CORE TO GET HEAT AGAIN.

Change the thermostat under the intake horn.

This is not un- common. The heating elements do wear after a while. It is probably an open circuit in one of the pads in your seat. A quick restance check can determine which one it is.

there is an actuator assy in the dash that controls the door for the heat usually they start clicking when going bad the dash has to be pulled back to repair