why do hot engines “click” when turned off?

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After driving for a little while, you turn into a parking lot, park your car, turn it off and get out. Then you hear the engine making clicking sounds. It only does it when it’s hot, does it have something to do with metals expanding when they’re hot or?

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11 Answers

Anonymous 0 Comments

It might be the 12V clutch on the A/C compressor? Try it with the A/C off. Drive a block and then park and turn off car.

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