Skip the auto shop - Our mechanics make house calls

Q: Car overheating

asked by on

My car is overheating, even though I recently had the water pump and thermostat changed.

A: You might have an air pocket in the cooling...

You might have an air pocket in the cooling system. Air pockets are common on some vehicles and can be a headache. When the cooling system is opened and coolant drained, air from the atmosphere gets in the engine. Once the system is sealed back up and coolant refilled, the air can stay trapped in the engine. This pocket of air travels until it get to the thermostat. Once there it doesn’t let the hot water touch the thermostat. This keeps the thermostat from opening and causes the vehicle to overheat. The system will continue to overheat until the air pocket is bled out. Have a certified mechanic from YourMechanic inspect your vehicle to have your vehicle’s overheating problem diagnosed more precisely in person.

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

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!

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: i have a 02 cavalier and its overheating i changed the thermostat. then last night i left it on for 2 hours by accident and it ove

There are several items that work together to cool the engine. A failure in any one can cause the engine to overheat. The cooling fan needs to be operating properly, the water pump needs to circulate the coolant effectively, and...

Q: Issues with coolant pouring out of the overflow

Hi there. If the engine is losing coolant, then the location of the leak needs to be found first. A leak will allow the coolant to get low enough to cause it to overheat. I start by doing a pressure...

Q: Seemingly misfires

Hi...your vehicle has an on-board diagnostic system, albeit the early version known as OBD-I. What I would therefore recommend, to get this engine running condition diagnosed and repaired, is you request a check engine light diagnostic. The trouble codes that...

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...
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...
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.