Q: Source of a whistling sound

asked by on

So I have this problem with my car. It makes a loud whistling sound but ONLY on the first start up of the day. I drive it around for a while and even restart it (I'm a delivery driver so I drive it often) and I never hear the sound again until the next day or when it cools down significantly. I believe it is a belt problem but I've gotten a few mixed replies online and wanted another opinion.

Hello, thank you for writing in. When dealing with something like this, the best thing to do is have someone else start the vehicle and listen carefully to try and pinpoint exactly where it is coming from. If the belts are the issue, there are several things you can do to try and quite them down. If the noise is truly a "whistle", or air escaping somewhere, the culprit is likely an exhaust gasket, vacuum leak, or EGR issue. Without performing an inspection, its almost impossible to tell. You want to think about all of the components that will expand when the car heats up. There are several components that will expand to make a proper seal and seat properly once warm air or fluid has be run through them. For more help with diagnosing where the noise is coming from contact our service department.

Was this answer helpful?
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. Source of a whistling sound

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: What does the loose fuel cap Warning Light mean?

The loose fuel cap Warning Light is located on the instrument panel. This light illuminates when the fuel cap is not properly secured. When you notice this light, secure the fuel cap as soon as is safely possible.

Q: My tire went flat. Loud screeching noise since putting on spare tire.

It's apparent due to timing that something to do with the new tire is your source for unwanted sound. Something is making contact to something else that it should not be. You need to start by removing the spare tire...

Q: No heat. Replaced coolant and replaced thermostat. Car is still overheating and has no heat. Only cold air comes out.

The heater not working in some cases may be related to the overheating problem you are also having. This may be due to a faulty heater blower motor or potentially a bad heater core. As you may know, the heater...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
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 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.