Car heat not working

Asked by Jan 30, 2019 at 10:58 AM about the 2001 Dodge Stratus

Question type: Maintenance & Repair

My heat dont work I changed thermostat  new
radiator overflow tank is good heat is still cold

2 Answers

11,925

It is possible that the heater core (small radiator under the dash board) is clogged. Quite possible on a vehicle this old. Are the heater hoses under the hood getting warm when you turn on the heater?

71,805

1. Check radiator coolant level. Really low coolant can prevent it from heating the core properly; a failed thermostat will act similarly. An air bubble in a heater line can block fluid passage and should be purged properly (lots of videos about this on line). 2. The ductwork has blend doors that move to get the temperature to the vent where you want it. The blend door that throttles hot/cold is sticking because the door actuator is defective. You may have noticed a tapping sound under the dash from a defective actuator. Try a spray lubricant on the actuator, or remove it to see if there's a broken sprocket. Might need replacing. It's not a difficult fix.

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