Squealing or chirping from the engine
This page is for information only; a mechanic makes the diagnosis.
Likely causes
A high-pitched squeal while the engine runs, especially on a cold start or when turning the steering, often means the serpentine (auxiliary) belt is slipping. The belt may be old, or its tensioner, idler pulley or alternator pulley may be worn.
Can I keep driving?
If the serpentine belt breaks, the alternator stops charging; on some vehicles the water pump and power steering pump stop too. If the noise persists, have it checked without delay.
Related parts
Tap a part to see listings of that type.
The same symptom can have different causes; have a mechanic look at the vehicle before buying a part and, if possible, get the part code from them.
Frequently asked questions
What are the likely causes of "Squealing or chirping from the engine"?
A high-pitched squeal while the engine runs, especially on a cold start or when turning the steering, often means the serpentine (auxiliary) belt is slipping. The belt may be old, or its tensioner, idler pulley or alternator pulley may be worn.
Can I drive with "Squealing or chirping from the engine"?
If the serpentine belt breaks, the alternator stops charging; on some vehicles the water pump and power steering pump stop too. If the noise persists, have it checked without delay.
Which parts should be checked for "Squealing or chirping from the engine"?
Common causes include these parts: Serpentine Belt, Serpentine Belt Tensioner, Idler Pulley, Alternator Pulley. The mechanic who sees the vehicle decides which one to replace.