Skip the auto shop - Our mechanics make house calls

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.

A: Just to be informative the radiator and the...

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?

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

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: I have a 2000 Chevy Silverado 4x4 with 123,000 miles on it. Had to have it towed home after it died. Won't stay running.

Hi there. Have you checked for any problem codes, whether the Check Engine light is on or not? Those codes, if any, will expedite accurate diagnosis and lower cost to repair. I would check the fuel pump relay. The...

Q: Car overheating, rust-like residue leaking out

The engine may have a head gasket leak. The residue you see is from the combustion from the engine getting into the radiator cooling system. A combustion test done on the radiator should be done to see if you have...

Q: My EVAP canister has a small leak

Hello! I suggest that a technician with a smoke machine test your EVAP system. The smoke will come out of any area of the EVAP system that is leaking. Most Auto shops will have a smoke machine. I would recommend...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
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...