6 car sounds you should not ignore

Don't just turn up the music and tune out the noise. If you car is emitting these screeches, howls, and groans, then it needs some attention right now.

1. A Diesel-Like Clattering in Your Gas-Powered Car.

Worst-Case Scenario: Detonation, also known as pinging or knock.
Why: Things like bad gasoline or incorrect ignition timing cause the fuel to go boom too early. If left unchecked, you risk serious engine damage.

What To Do: Switch to higher octane gas, which resists detonation, and check the timing.

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2. Questlove Drumming Underneath Your Car when It's Moving, Increasing with Vehicle (Not Engine) Speed.

Worst-Case Scenario: Failing universal joint or driveshaft bushing.
Bad Stuff That Can Happen: U-joint fails completely, driveshaft digs into pavement, and the car pole-vaults and crashes.
Why: Both the U-joint and bushings simply wear out. The noise comes from the driveshaft flopping around like an ailing fish.

What To Do: Inspect the driveshaft for worn or broken parts, replace them, or get to a mechanic.