Skip the auto shop - Our mechanics make house calls

Q: Truck is overheating, new turbo and alternator

asked by on

I had my turbo replaced within the last month. I just replaced one of the alternators. After driving on the highway for about an hour, a winning sound kicks on(it sounds like a fan, bUT not sure). After about 30 minutes, the temp goes all the way up, and I pull over and let it cooldown. I check the coolant level, and it is in range (it was smoking or steaming when I removed the cap). I continue my trip, but keep it below 70mph to keep the strain down, and it does not overheat, but that fan sound stays on. I have to make the trip back on sunday, and its a 4 hour trip. Any ideas on what it can be to try to make it home to the mechanic to figure it out and keep the engine safe??

My car has 85000 miles.
My car has an automatic transmission.

Make sure the coolant overflow tank is full to the top. It is very common for these to develop cracks which will leak coolant at operating temperature when the pressure inside the system increases. From your explanation, I will assume the vehicle did reach overheating temperature. In this case, the engine coolant thermostat MUST be replaced along with any service done to the vehicle’s cooling system. Once overheated, the engine coolant thermostat will not operate properly and may cause the vehicle to overheat again even after another component has been replaced.

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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

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: Car heating

Hi there. There are two tanks usually next to each other that can cause some confusion. One tank is the windshield washer fluid reservoir, the other is the radiator overflow tank where you add radiator coolant. However, if your car...

Q: Faulty radiator

Thanks for writing in. There are many things that can cause thermostat or water pump problems, from broken serpentine belts, to air bubbles in the coolant lines and more. A faulty radiator is not very common. However, if it's...

Q: It has been a warmer February day, but high only hit 68, so what could cause a water leak under the car?

Hi there. The leak seems to be coming from the windshield washer reservoir. Look under the vehicle with a flashlight and on the washer reservoir tank and see if there is water droplets coming off of it. If so, then...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
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...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.