Skip the auto shop - Our mechanics make house calls

Q: Noise coming from engine compartment when turning the heat on - 2006 Hyundai Tucson

asked by on

Thank you for reading! I just moved from Florida so the heat wasn't really used in the car ( if that makes a difference) and now when I turn the heat on and when it is running, there is a noise coming from under the hood. The A/C and the heat both work but I haven't been running it much so I don't make the problem worse. I thought it may be my serpentine belt, so I got the belt, the tensioner and idle pulley replaced. I still hear the noise. It even feels like it pulls when it makes the noise from time to time. ( every couple of minutes) The car only has 63000 miles so I haven't changed the timing belt. I hope that is not the problem. Thank you again!!!

My car has 63000 miles.
My car has an automatic transmission.

A: Hello. Does the noise occur only with the h...

Hello. Does the noise occur only with the heater or does it make the same noise with the A/C on as well? If so, you will want to direct your attention to the blower motor. The bearing can fail and other mechanical binds and issues can occur. If the issue is only related to the heating system, you will want to look further into just that system.

The heating system works with the cooling system in the way that it utilizes hot coolant after the coolant transfers the hot temperatures from the engine. It then passes air over the hot coolant and sends it into the cabin (using the same blower motor for the A/C). So you will want to make sure the cooling system is allowing the coolant into the heater core. Clogs in the system can also cause pressure issues and malfunctions. Often with noises, a good visual inspection of the entire system can help pinpoint where exactly the noise is coming from.

I recommend having a certified mechanic, such as one from YourMechanic, come to your location to determine why the car is making this noise and suggest the necessary repairs.

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・Save up to 30%

Get a quote

What others are asking

Q: Top water hose gets hot with new thermostat

Hello. This is completely normal operation of the vehicle's cooling system. The top radiator hose should always be warmer than the bottom. As coolant flows through the water pockets in the engine it picks up heat, and it is then...

Q: Starting issues happening randomly, idling fine

Hello. If the engine is cranking over and just not starting, then it is typically a bad crank position sensor. When this sensor fails, it is typically intermittent and if the computer does not see the crank signal, it will...

Q: When I turn my car on it neither drives forward nor drives in reverse.

Hi there. With the engine off, put the transmission in any gear other than park. See if the vehicle is able to move. If the vehicle is able to move, then Start up the engine and put the transmission in...

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...
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...
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.