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Should the ISC solenoid be air tight when closed?

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Old 08-12-09, 01:37 AM
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Should the ISC solenoid be air tight when closed?
I tested my ISC off the car, and when de-activated, it will still flow air. It opens and closes accordingly, and flows more air when open, but shouldn't it be air tight when closed?
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Old 08-12-09, 01:43 AM
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It is a Bosch 2-wire valve. They run about ~30% open when no signal is applied.
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