Skip the auto shop - Our mechanics make house calls

Q: Overheating

asked by on

I replace the thermostat and that didn't stop the overheating I also replaced all of the fluids and radiator hoses maybe it can be the water pump. My water pump isn't leaking does that mean it's okay?

There are several possible causes for a vehicle to overheat. There could be a clogged radiator, bad water pump, air pocket in the cooling system, malfunctioning cooling fan, or a bad thermostat. By the way, just because a water pump isn’t leaking doesn’t necessarily mean that it isn’t bad. Typically, when a you hear about a water pump that has failed and started leaking, it means that a bearing has gone bad and allows for the coolant to escape. This is not uncommon, but it is not the only way for a water pump to fail. I have seen the impeller on the inside of a water pump, brake off of the shaft, and from the outside there is no signs of the failure. I will say that the most overlooked reason for overheating, in my experience, is a cooling fan that is not functioning properly. If you need some help in diagnosing and/or repairing the problem, contact a certified mechanic, like the mobile mechanics available at YourMechanic.com.

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: My truck has been smelling hot for a couple of months.

When people describe a car as "smelling hot" I usually assume they're catching a hint of boiling antifreeze. That could be from a leak that is spilling on a hot part of the engine or it could be that the...

Q: Suddenly my engine surges on rpm on the freeway or main street at 40 mph between 3000 rpm's to 4000 rpm's. Could it be the EGR?

Hi there. Check the distributor or coil packs to the vehicle. The surging would most likely be caused by the electronics getting old and causing a delay in the spark ignition. I recommend replacing the spark plugs and wires and...

Q: When a car overheats does it leak out refrigerant?

Your car's air conditioning system is an entirely separate system from your radiator and cooling system. As such, it should not be leaking refrigerant when the vehicle overheats. Typically when a car does overheat and begins to leak fluid, it...

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...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
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...