Unusual Noise Under Car When Turning
A noise from under the car during turns often indicates a worn CV joint, damaged steering or suspension component, or an exhaust issue. The 2019 Nissan Altima is known for CV joint wear, especially if the protective boot is torn.
Diagnosis Details
Possible Causes
Worn outer CV joint (constant velocity joint) – clicking or popping noise when turning, especially at low speeds.
Damaged or loose steering or suspension components (tie rod ends, ball joints, sway bar links) – clunking or knocking sound.
Exhaust system contacting the underbody or a loose heat shield – rattling or scraping noise during turns due to engine movement.
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What You Should Do
Inspect the CV axle boots for tears and grease leakage.
Check steering and suspension joints for looseness.
Examine exhaust mounts and heat shields.
If you hear clicking, the CV joint likely needs replacement.
For clunking, have a mechanic inspect the suspension.
A rattling noise may be a loose heat shield that can be re-secured.
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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.
