Unusual Noise from Under the Car (Constant)
A constant unusual noise from under the vehicle suggests a mechanical issue such as a loose exhaust component, worn drivetrain part, or suspension problem. The noise may be a rattle, clunk, or grinding sound.
Diagnosis Details
Possible Causes
Loose or damaged exhaust system component (e.g., heat shield, hanger, or pipe)
Worn or failing drivetrain component (e.g., CV joint, driveshaft bearing, or differential)
Suspension issue (e.g., worn bushing, loose bolt, or damaged shock absorber)
Foreign object caught under the vehicle (e.g., debris or plastic shield)
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What You Should Do
Inspect under the car for loose or dragging parts.
Check exhaust system heat shields and hangers.
Look for signs of wear on CV joints, driveshaft, and suspension components.
If unable to identify, have a professional mechanic perform a thorough inspection.
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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.
