Q: Replaced water pump, radiator and thermostat car is still overheating. What can it be?

asked by on

Changed water pump, radiator and thermostat. Car still overheating it has a leak in the headers and i am getting that replaced too. Can that be why it is still overheating?

My car has 170000 miles.
My car has an automatic transmission.

I’m sorry to hear about your overheating issues. There are a few possibilities that can cause an engine to overheat. The radiator, water pump, and thermostat are definite possibilities, but there are a few others that are possible also. A faulty cooling fan is the first thing that comes to mind, but it could also be a head gasket issue, clogged coolant passages inside the engine, or faulty radiator hoses. I would first look at the cooling fan and/or the cooling fan switch. It would be necessary to start with a cold engine and check to see if the fan comes on as the engine warms up. Most of the time, you can do a quick check by turning on the air conditioning, as this should signal the fan on also. If this is something you feel you could use a hand in diagnosing/repairing, contact a certified mechanic, like the mobile mechanics at YourMechanic.com.

Was this answer helpful?
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. Replaced water pump, radiator and thermostat car is still overheating. What can it be?

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: What should I do when my engine revs up and down?

You first want to want to make sure that all electrical connectors at the throttle body are dry, free of corrosion and dirt, plugged in and making secure contact, particularly if you removed any during the service. Make sure none...

Q: Steering wheel shaking

Hi. There are are several possible problems going on here. If the wheel shakes going over bumps, then you probably have worn tie rod ends, or the steering rack has too much play in it. A qualified technician should look...

Q: Coolant loss due to possible blown gasket.

A pressure test of the cooling system will reveal if the coolant system has a leak. If the gauge drops during testing, there is a leak - either internal or external. If the leak is external, it can usually be...

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 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...
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...