Squeaks, squeals, rattles, rumbles, and other sounds provide valuable clues about problems and maintenance needs. Here are some common noises and what they mean:

• Squeal – a shrill, sharp noise, usually related to engine speed, loose or worn power steering, fan or air conditioning belt.
• Click – A slight sharp noise, related to either engine speed or vehicle speed, loose wheel cover, loose or bent fan blade or stuck valve lifter or low engine oil.
• Screech – A high-pitched, piercing metallic sound; usually occurs while the vehicle is in motion caused by brake wear indicators to let you know it’s time for maintenance.
• Rumble – a low-pitched rhythmic sound could mean defective exhaust pipe, converter or muffler or worn universal joint or other drive-line component.
• Ping – A high-pitched metallic tapping sound, related to engine speed is usually caused by using gas with a lower octane rating than recommended. Check your owner’s manual for the proper octane rating. If the problem persists, engine ignition timing could be at fault.
• Heavy Knock – a rhythmic pounding sound could indicate worn crankshaft or connecting rod bearings or loose transmission torque converter.

Clunk – a random thumping sound could be sign of loose shock absorber or other suspension component or loose exhaust pipe or muffler.