Q: Chirping sound when idling

asked by on

I think the serpentine belt is making a noise. It sounds like a chirping sound that goes away when the car is moving, but returns when I idle.

It is possible that the belt has become stretched, and when the engine is running at lower RPMs such as idle, the belt will slip on the pulleys, causing the noise you are hearing. When the RPMs rise, due to the crankshaft pulley spinning faster, the belt is unable to slip because the extra speed takes up the slack in the belt. I would recommend having your serpentine belt system inspected by a certified mechanic. If any pulleys or the belt tensioner are damaged, have them replaced with the belt to ensure the system is operating correctly.

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. Chirping sound when idling

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 idles and multiple trouble codes are triggered

Hi there. If this vehicle is having an idle concern, I have to ask if you may be having a stumble or stall issue when coming to a stop. If so, your vehicle may be covered under a special...

Q: Misfires 3 cylinders stalls

Hello there, thank you for asking about your BMW 760Li. I don't know what year your BMW is, but there was a technical service bulletin (TSB) on some models regarding the fuel injectors. Although I can't seem to locate the...

Q: Hi William, I'm trying to replace my alternator on a 2007 Lexus Es350 and I can't get the last bolt out thats under the alternator

If your ES350 was built after March 2006, per the Factory Service Manual, you have to remove the bumper of the car as well as other components to gain access. Due to the amount of disassembly required, if you have...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
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...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...