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Does anyone know what effect a cold shutdown (disconnecting the battery) of the car has on the engine and other systems? It's safe to disconnect the battery when the car

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Old 11-12-2012, 06:07 PM   #11 (permalink)
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Does anyone know what effect a cold shutdown (disconnecting the battery) of the car has on the engine and other systems? It's safe to disconnect the battery when the car is off, but what about when you're tooling down the road at highway speed? A cold shutdown of an old (pre-computer control, no VVEL) car wouldn't worry me - all you'd lose is P/S and P/B - but I'm wondering what it would do to a modern car. Could you end up poking a hole in a piston with a valve? I'm not worried about radio presets or even ECM learned data, just things that would be harmful to the engine or other systems.
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