Q: Have no heat, I've took the thermostat out still no heat. Flushed the radiator couple times. Doesn't seem to be flowing n radiator

asked by on

Here are all the things that i see wrong... No heat, blows out cold even with thermostat out. Im not really seeing flow of water from overflow to the radiator. Also ive tried flushing it a couple times with a garden hose the fluids in the radiator looks like really thick mud.

My car has 145000 miles.
My car has an automatic transmission.

The complete cooling system should be drained and fresh clean water put in with a good quality radiator flush put in. Run the engine for at least 30 minutes at 1000 rpms with the heater in the on position but on lowest blower position. Once ran then check to see if both of the heater hoses are warm. This indicates a good flow through heater core. Now let engine cool and drain and refill with fresh water again and start and run a few minutes then drain system, install a new thermostat and refill with 50/50 new coolant designed for the vehicle. Run and check the engine comes up to operating temperature and heater output is hot once engine warms up. You will not get good engine heat if engine does not heat up.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Have no heat, I've took the thermostat out still no heat. Flushed the radiator couple times. Doesn't seem to be flowing n radiator

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: What causes my car to keep overheating?

Thank you for writing in! Typically the thermostat and water pump are the primary sources of overheating on a 1997 Toyota Corolla. However, since the fluid never left the reservoir, it could be caused by a blockage in the coolant...

Q: Car getting no fire. Battery checked and is good. Started up, drove 4 miles to work. Tried to crank, nothing.

Hi there, thanks for writing in. I'd be happy to help. You appear to have more than one problem. This would not be out of the ordinary for a 1986 vehicle. Let's begin with the key getting caught. Having to...

Q: Heater / A/C are not working properly. They are weak and the highest and lowest settings do not work at all. Any ideas what it could be?

Hi there. Check the power from the switch on each setting and to the blower. See what the voltage is at each setting. If the voltage is low or not showing, then the switch is not working and needs replaced....

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
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...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...