How does a car stay still when the engine is on in park?

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Title.

When a car has its engine on, the engine is working. But if its in park, the car doesn’t move. How? The engine is still running like if the car was driving, but what mechanism prevents the car from moving?

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18 Answers

Anonymous 0 Comments

The parking gear (actually called a pawl). Shifting into “park” connects the driveshaft directly to an unpowered gear that does not turn easily. That gear holds the wheels from turning, but is not a perfect brake so it won’t hold a car on a steep hill and will either snap or slide free and let the car roll away. Set your parking brake on hills!

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