Q: Bad thermostat causing radiator leak.

asked by on

My radiator has a severe radiator leak. I suspect it is at the overflow reservoir and is being caused by a bad thermostat.

Just to be informative the radiator and the overflow tank are two separate parts that both store coolant and if one is leaking the other is not leaking. Also a bad thermostat will not cause a radiator or an overflow tank to start leaking. If one of those two parts are leaking and the leak is not obvious to the eye I would recommend having a technician perform a cooling system pressure test to determine where your leak is located. This test pressurizes the cooling system without the engine running making leaks more easily noticeable to the technician. Once the leak is found I would recommend having it repaired as soon as possible in order to prevent engine damage due to overheating.

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. Bad thermostat causing radiator leak.

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: Melting spark plug wire boots

If you have had to replace spark plug wires due to melting them then you need to use a stethoscope to check around the burned plug wires to see if there is exhaust leaks from the manifold gaskets and replace...

Q: Thermostat replacement without removing throttle body -- easiest way to do?

You do not need to remove the throttle body. Once you remove the air cleaner and air inlet tube to the throttle body then drain coolant. Remove hose from thermostat outlet pipe. Remove the exhaust crossover pipe and then you...

Q: Huge oil leak for NO reason?

There are quite a few oil seals on an engine that could leak. If the front crankshaft seal tore or was pushed out that could create a large sudden leak. That seal is not difficult to replace though. It's possible...

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...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...