Q: Truck overheats when temp outside is below freezing

asked by on December 19, 2016

I'm having a problem with my truck overheating when I start it in the morning. when the day goes by and it warms up a little bit it runs just fine it's only when it's below freezing which is usually in the morning

My car has 240000 miles.
My car has an automatic transmission.

If the engine is only overheating when temperature drops below freezing then the most likely cause is the coolant in the engine is freezing due to incorrect mixture with too much water. Have the coolant flushed out and replace with new coolant mixed for the temperatures you are in. A mix of 50/50 coolant to distilled or deionized water. You may want to also replace the thermostat while the coolant is drained.

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


Experienced Mechanic?

Earn up to $70/hr

What others are asking

Fan blower won't work
If your blower does not work at all, there could be several issues. The two most common are the blower motor itself begin bad, and the other is the blower motor resistor. The resistor is what controls the speeds of...
Rumbling sound from rear of vehicle
There can be multiple causes when dealing with a roaring or rumbling sound. A wheel bearing can cause a rumbling sound. When it comes to a rear end or differential it is important that all of the correct shims have...
Check Engine Light came on
You need to have the purge valve checked to see if it is flowing vapor from the fuel tank when the engine is at idle. The flow will cause the engine to run too rich and can cause the cylinder...
Could someone tamper with your timing chain and cause it to break?
Hi, thanks for writing in. Although vandalism could happen, but its highly unlikely due to the chain being fairly difficult to get to. The most common causes for the chain to fail is a chain that has stretched over time,...
Car will not shift into reverse or park.
Hi, thanks for writing in. Try turning the car off then shifting it to park. If that works, most likely the causes are the brake light switch (https://www.yourmechanic.com/services/brake-light-switch-replacement) or the transmission control module. From previous experience working in a Mercedes...
When I open my doors the interior lights don't come on.
Hello. Without knowing the make and model of your vehicle, it hard to definitively give insight on the exact component that has failed. In general, when the door is opened, the switch turns on the interior lights. If the lights...
Will a fender from a coupe fit a sedan?
Hi there. In most cases, the front half of the vehicle is similar in dimensions for both sedans and coupe's of the same model. However, what can vary is the location of bolt holes and brackets for installation. In order...
Chevrolet Aveo 2005 won't start after cold weather.
Cold weather is hard on batteries and it sounds like yours is dead. There is enough power to light the dashboard until you try to draw power to the starter, Then everything goes dead, the starter solenoid drops back, the...

Related articles

A Buyer’s Guide to the 2012 Chevrolet Corvette
The The Chevrolet Corvette is an American original that has stood the test of time. With the 2012 version, you’ll discover improved handling and horsepower that delivers the superior performance you’ve come to expect from this icon. With options as...
2012 Chevrolet Equinox vs. 2012 GMC Terrain: Which One Should I Buy?
The mid-size crossover SUV category offers the comfort and size of an SUV, but on the platform of a car, giving it the look and feel of a large hatchback. The unibody construction typical of passenger vehicles is used instead...
How to Buy a Good Quality Water Pump
When When your car is running it's important that it maintains the proper temperature, which is why the water pump is so important. Not only does it pump water, as the name suggests, but it also pumps coolant into the...