Skip the auto shop - Our mechanics make house calls

Q: How can I tell if it is my water pump or thermostat that needs to be placed?

asked by on

My car starts to overheat after driving about 5 miles the water in the reservoir starts to boil over. Then it makes like a squeaking sound that's only happened 3 times Maybe also the hose from the radiator gets very hot and hard no longer is it squishy so I'm pretty sure it's either the water pump or thermostat but since I'm not a mechanic I do not know which is that something y'all can diagnose when you come out to do the repair and do y'all include the part in the price or would I need to order the part? And I would like to schedule to get this work done on Monday or Tuesday thank you and look forward to hearing back

My car has 166000 miles.
My car has an automatic transmission.

The water pump moves the coolant through the system and the thermostat regulates this flow to maintain operating temperature. If the water pump has failed, the coolant will not flow through the system so the temperature will rise quickly and the heat will be concentrated on the engine. An experienced technician like one from YourMechanic can use an infrared temperature gun to check temperatures along the cooling system and determine whether the problem is the water pump, the thermostat or both. Since the vehicle has overheated already, the thermostat should be replaced along with any other cooling system service.

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!
  • Home
  • Questions
  • How can I tell if it is my water pump or thermostat that needs to be placed?

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 front disc brake seizing

It is possible that the newly installed caliper was faulty. It is also possible that the wheel bearing on the right front wheel is completely destroyed and no longer able to rotate. This issue may also cause an ABS or...

Q: Can dirty filters cause the truck not to get enough power to pick up speed?

Hi and thanks for contacting YourMechanic. Dirty oil can cause problems with the engine, but not in two weeks unless you are driving long distances on the highways. Adding oil will actually aid the oil, so no worries until you...

Q: Would a blown coolant hose, at heater core, cause loss of power?

Yes, severe overheating will cause loss of engine power and also has a high potential to damage the engine as the pistons scuff the cylinder walls and the exhaust valves stick in the valve guides. If the overheating is severe...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
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...