Engine Compartment Noise Diagnosis
A constant unusual noise from the engine compartment of a 2019 Hyundai Elantra could indicate a failing accessory belt, tensioner, pulley, or a more serious internal engine issue. The noise is present all the time, suggesting it is not intermittent.
Diagnosis Details
Possible Causes
Worn or loose serpentine belt causing squealing or chirping
Failing belt tensioner or idler pulley producing a grinding or rattling sound
Internal engine noise such as worn timing chain, low oil, or valve train issue
Related OBD-II Codes
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What You Should Do
Inspect the serpentine belt for cracks, glazing, or looseness.
Check belt tensioner and pulleys for play or roughness.
Verify engine oil level and condition.
If noise persists, have a professional listen to pinpoint the source.
Related Repairs
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Disclaimer: This AI-generated diagnosis is for informational reference only. Always consult a qualified mechanic for an in-person inspection. AutOwner is not responsible for decisions made based on this information.