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.

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!
  • Home
  • Questions
  • Noise coming from engine compartment when turning the heat on - 2006 Hyundai Tucson

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: No air flow in a/c or heater

If neither the AC or heat blows, the problem is with the blower motor or its control circuit. In your vehicle, the blower circuit consists of the heater fuse, gauge fuse, heater relay, blower switch, blower relay, and blower motor....

Q: EPS light turns on then off & it is hesitating like if car won't turn on.

If the vehicle is not starting easily, it can be caused by a number of issues or components. Any of a dozen sensors like the coolant temperature, throttle position, or crankshaft sensors can be the cause. Low fuel pressure due...

Q: Jerking reaction when accelerating

Hi There, This may be related to a dirty or faulty mass air flow sensor or possibly a dirty or faulty idle air control valve. The idle air control valve monitors the air intake as it is mixed with fuel...

Related articles

Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
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...