Q: It this a complete flush: Radiator, heating core, water pump.

asked by on

I know some places only flush radiators. I wanted to make sure it is the entire coolant system getting flushed. Also do they bleed the system of air when done?

Hi there. When performing a coolant flush, drain the coolant from the radiator and out of the lower radiator hose. Then remove the heater core hoses and drain out the coolant from the hoses. Remove the upper radiator hose and drain any residual coolant in the hose. Pump out or remove the coolant reservoir and drain out the coolant. This will ensure that all of the coolant is out of the engine. Then fill the system with the recommended type and amount of coolant until all of the bubbles are gone and the coolant is full. It is recommend that the thermostat and radiator cap (reservoir cap for sealed reservoir systems) to be replaced before putting in new coolant. If you need further assistance with your cooling system, then seek out a professional, such as one from Your Mechanic, to help you.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  1. Home
  2. Questions
  3. It this a complete flush: Radiator, heating core, water pump.

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: My water pump is leaking but I replaced timing belt and pump a year ago. Can I just replace the water pump this time?

Hello. You can just replace the water pump in this case. Although, the cost of just the timing belt is fairly negligible in comparison to the total labor of the job. My estimator says the water pump is a 6.5...

Q: My car gauge goes to regular temperature, there's coolant in the system, but the heater doesn't blow out hot air?

Hey there. I would check the fuse for the heater control valves first. These are solenoid-operated valves which allow or shut off hot water to the heater core. If they are not opening, there is no hot water in the...

Q: need to find bleed point for coolant on 2001 lexus gs300

Hello, thank you for writing in. There is not a bleeder valve on the cooling system, as the newer models are designed to "self bleed". Your owner's manual can confirm this, and give you more information on how your specific...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...