Skip the auto shop - Our mechanics make house calls

Q: Radiator doesn't cycle even though new.

asked by on

Replaced my radiator today and now fluid won't cycle through.

It is possible that there is an air pocket in your cooling system. This is not uncommon. The air just needs to be expelled. If I may ask, did you replace the radiator due to a leak or because the car was overheating? There is a small chance the impeller on your water pump may have failed causing your coolant not to be circulated through the radiator and cool your engine. I would enlist the help of a mechanic to evaluate if your cooling system needs to have the air bled out or if there is a problem with your water pump.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 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
  1. Home
  2. Questions
  3. Radiator doesn't cycle even though new.

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: Right tire making thumping sound when turning right. 1999 Ford Expedition

Hi - your symptoms suggest that the right front tire may have a tread separation problem, on the inside of the tire. It will probably require jacking up the right front corner of the vehicle, then spinning the tire by...

Q: Interior lights staying on

It is possible that you may have some broken wires in your driver side door. There is a group of wires that run from inside the driver side door to the inside of the car. Every time your door opens...

Q: Engine temperature keeps going up

Hello. The cooling system is designed to keep the engine at operating temperature. Hot coolant from the engine flows through the radiator, which lowers the temperature. The lower temperature coolant is then returned to the engine. The primary cooling system...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
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...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.