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Step 1
Turn the car on and listen for a high-pitched sound coming from your fan belt or accessory belt. If your belts are "singing," they need to be replaced.
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Step 2
Check for any high-pitched noises or steam coming out around your radiator cap when the car is operating at full or normal operating temperature. This indicates that the seal on your radiator cap may be blown and needs to be replaced.
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Step 3
Listen for squealing tires when you turn corners (and you aren't driving very fast). Your tires could be under-inflated.
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Step 4
Listen for a humming or whining sound coming from your wheels when turning corners. This is indicative of failing wheel bearings.
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Step 5
Listen for a loud knocking sound in your engine. This is indicative of a loose rocker arm or carbon buildup inside the engine. However, it can also indicate more serious problems. Whatever the problem, you will need to have the engine inspected for damage.
