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Chirping noise when idling or when accelerating at low speeds

Tiny
JOSHMAC76
  • MEMBER
  • 2014 CHEVROLET TRAX
  • 2WD
  • AUTOMATIC
  • 86,500 MILES
When I start my car in the evening a slight chirping noise starts, it usually only happens in idle or when accelerating at low km's. Just developed the noise a day or so ago, engine light hasn't come on but I don't know what to ask a mechanic to look for.
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Sunday, May 24th, 2020 AT 7:07 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,133 POSTS
Hi,

Chances are the accessory drive belt (serpentine belt) is loose or bad. I attached a pic of what I'm referring to. See pic 1 The belt is tightened automatically belt tensioner. See pic 2.

Now what I suspect is this. Either dampness is getting on the belt or it tensioner is weak. Here is what I want you to try. Start the engine. Open the hood and pour a small amount of water on the belt. If the noise changes, then it is related to the belt.

When you do this, make sure to protect your eyes and clothes from water spraying back at you.

Try that and let me know what happens. Additionally, with the engine off, pay attention to the condition of the ribbed portion of the belt (the side that touches the pulleys). Note if there are cracks or if it appears dry.

Let me know.

Joe
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Sunday, May 24th, 2020 AT 9:00 PM

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