Skip the auto shop - Our mechanics make house calls

Q: How do you keep an engine from cracking in cold weather without a radiator?

asked by on

While replacing my radiator i twisted the lower transmission cooler line. Its suppose snow tonight so how can I keep from cracking my engine block? not below freezing at least i dont think.

My car has 200000 miles.
My car has an automatic transmission.

Hi there. The best thing to do is remove the radiator cap to the radiator and try to untwist the lower radiator hose if you can. If you cannot untwist the hose and the coolant is full or if there is water in the engine and not coolant, then as long as the radiator cap is off then if the coolant or water was to freeze, then the water will come out of the radiator and not crack the block. Coolant with a full strength will hold up to (-75 F degrees). If there is water in the engine, I recommend draining some of the coolant to keep the engine freeze plugs from coming out overnight. Freeze plugs (casting or core plugs) are designed to come out in the event of the coolant or water freezing in the engine block preventing the block or heads from cracking as the water turns into ice. If you need further assistance with your cooling system, then seek out a professional, such as one from Your Mechanic, to help you.

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
  1. Home
  2. Questions
  3. How do you keep an engine from cracking in cold weather without a radiator?

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: Water leak at front of car

Hi there. Water leaking into the vehicle accompanied with low coolant level points in the direction of a leaking heater core. The heater core is a device through which hot engine coolant flows. It's design is similar to the engine...

Q: Engine clicking and shaking

Hello. The symptoms you describe can be caused by a few different things. A few possibilities are an exhaust leak, or some sort of engine performance issue, such as a misfire. If the noise appears to be coming from the...

Q: Feels like transmission slipping

It sounds like you may have a problem with one of your rear CV axles on your 2002 Honda Passport. If one of the axles fails, this can cause the driver to feel some resistance as well as vibrations. ...

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 to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
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...