After multiple coolant flushes, my car heater still only works on one side. What now?
There is no heat in the front passenger compartment of my 2009 Dodge Journey SXT because there are multiple actuator motors buried in the dashboard that open and close air passages. If any door is stuck open due to a failed actuator motor, fresh cold outside air will flow into the cabin unchecked.
Will a radiator flush unclog heater core?
The heater core, which is similar to a radiator and is part of the vehicle’s coolant system, can be flushed to remove these clogs, but if it still doesn’t work, your heater core may need to be replaced.
Does flushing a heater core really work?
RAY: You can also start by adding a chemical flush to the entire cooling system, then drain it and reverse-flush the heater core with clear water after letting the engine run and the coolant circulate for a while. Flushing a plugged heater core only works in about 40% of cases.
How do I know if I need my heater core flushed?
Symptoms of a faulty heater core, as well as possible solutions
- You smell coolant inside your vehicle.
- Your windows fog up.
- You see signs of a coolant leak under the dashboard.
- Your coolant level is dropping, or your engine is running hot.
What are symptoms of a bad heater core?
Five Symptoms That Your Car’s Heater Core Is Failing
- If you have fog inside your car, one of two things could be happening:
- Sweet Smells in the Car. The sweet smell in your car might not be your perfume or the donuts you’re taking to work.
- Constant Engine Coolant Loss.
- Cold Cabin/Hot Engine.
What causes a clogged heater core?
When you run straight water through your cooling system or your cooling system is full of scale and rust, your heater core can clog up. Remove the radiator cap and inspect the coolant while the engine is cool.
How can you tell if your coolant is clogged?
5 Symptoms That Your Radiator Is Clogged
- Discolored and thicker coolant. Do you know what color your coolant was originally?
- Damaged water pump.
- Excessively high gauge temperature readings.
- Blocked, bent, or damaged radiator fins.
Will vinegar clean a heater core?
Vinegar is an acid, but it’s mild acetic acid, and it’s perfectly fine to use it alone to remove system rust if you just add a gallon to the system and drive the car for a short period of time, like 10-20 minutes, including turning on the heat to clean the heater core.
Can I use CLR to flush my heater core?
AROD’S TRUCK: Just wanted to let you know that CLR works pretty well for flushing out your heater cores. Here’s what I did: Locate the two hoses that go into the firewall to the heater core and disconnect them.
What problems can a bad heater core cause?
Even a clogged heater core can prevent proper coolant circulation, causing your engine to run hot; however, if you must continue driving for a short distance, keep an eye on the temperature gauge.
What happens if you reverse the heater core hoses?
The coolant will flow in the opposite direction through the core if the hoses are reversed, but it will still flow in the same direction as far as the engine is concerned, which may not prevent debris from the core from entering the engine cooling system.
Why is my car blowing cold air when the heater is on?
A faulty thermostat, low coolant fluid level, malfunctioning heater core, a leaking cooling system, or problems with heating controls and blend door can all cause the vehicle’s heating system to blow cold air.
Should both heater hoses be hot?
If coolant temperature is acceptable, feel both heater hoses, which should be hot.