Q: Thermostat housing leaks coolant

asked by on February 11, 2016

The thermostat housing is leaking coolant.

Hello. The thermostat gasket is most likely what is causing the leak. The gaskets overtime become hard and lose the ability to seal the coolant passing by the thermostat. The replacement of the thermostat and gasket is the most prevalent fix. It could also be a crack in the plastic structure of the thermostat housing which is causing the leak. I suggest having the cooling system pressure tested by a well trained technician. Pressure testing the system will expose any coolant leaks. A properly trained technician would be able to inspect the coolant leak and make the necessary repairs to have your vehicle running smoothly again.

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

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

What's the cost on a repair for a value seal replacement

Hello, thank you for writing in. The cost of replacing your valve seals is going to vary by the technicians available in your area, and the availability of parts. Unfortunately, accessing the valves can be very difficult and its can...

Van squealing and leaking power steering fluid.

The noise you hear is the power steering pump whining from lack of fluid. The leaking fluid is most likely the pressure line leaking fluid and would need to be replaced. The power steering pump may have to be replaced...

Heat shield replacement cost for 07 MDx

Hi there. It is not very common for a heat shield to come loose, which sometimes causes the noise you're describing. In most cases, it's a throttle bracket or radiator fan cover that sometimes can be the source of the...

Related articles

A Buyer’s Guide to the 2010 Dodge Viper
2010 2010 was the last production year for the Dodge Viper before it took an extended leave of absence from the automaker’s lineup. It would debut once more in 2013. The 2010 Dodge Viper is a two-seat roadster (convertible) and...
Is it Safe to Drive With a Leaking Gas Tank?
A leaking gas tank can be caused by a number of different things, such as rocks or sharp objects your car picks up...
How a Car's Cooling System Works
Have Have you ever considered the thousands of times explosions occur in your engine? If you're like most people, that thought never enters your mind. Every time a spark plug fires, the fuel and air mixture in that cylinder blows...