Q: Over heatin

asked by on

2 days ago my car started whinning it sounded like it was in the area wheere the fan is at well this mornin im siting at a red light and it starts to over heat and the heater blows out cold are so i go down the road and it cools it down but after bout 5 mins it starts to over heat so i pull over put it in park and it cools down so i pul out and drive for a second it starts to over heat again then the heater starts worker and it cools down then the heater stops workin again but it didn over heat this time what would be the most likey problem with it

When the engine is stone cold (for safety reasons), open the radiator cap and check the coolant level which should be right up to the top of the radiator filler neck. If the level is below the filler neck, add a 50-50 (water-antifreeze) mix of the coolant specified in your car’s owner’s manual. If the coolant level is low, air could have gotten trapped in cooling passageways, thus accounting for both the overheating and the inconsistent operation of the cabin heater. Check the coolant level again after running the car (again, check only when the engine is stone cold) and top off as necessary. If, in the coming days and weeks, the level falls (you should be able to view the coolant level in the coolant reservoir or recovery tank), you have a coolant leak somewhere that should be repaired. If, despite adding coolant, or after confirming that the coolant is "already" full, the car still overheats, the recommended approach is to request an overheating diagnostic. The responding certified mechanic will identify the cause of the overheating (e.g., thermostat, radiator cap, water pump, radiator, and so forth) and estimate the repair cost for 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!

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 car runs hot immediately after starting, I just noticed it yesterday.

A small coolant leak will in time become a bigger issue. It is not good for the engine to be overheated because it can damage the engine internally. Water is okay to use for a temporary fix. Any condition with...

Q: Overheating

Hello, thanks for writing in about your 2010 Chevrolet HHR. For an issue like this, you may want to look at the fans while the car is on to ensure they are turning on and off. Also, it may be...

Q: My 1999 Toyota Camry won't start what might it be?

From what you've described, you most likely blew a head gasket. All the coolant is now in the engine causing it to lock up. Open up the oil cap and check the oil dip stick to see if oil is...

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...
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...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.