Q: Overheating when the heat is on.

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The car was hit in the front end when our son was driving it. He had to keep adding water to it as he drove from where the accident happened. When the garage fixed the damage from the accident, they put in a new radiator. We just replaced a hose also, but it is overheating when the heater is running. If you turn off the heater the temperature comes down. When the heat isn't turned down yet, it will start to blow cold air while the temperature is going up. What do you think?

My car has 180000 miles.
My car has an automatic transmission.

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