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Should a jetta ISV make a clicking noise


we4cougs
11-09-2004, 06:12 PM
only? I have heard that it should "click" when the valve opens and closes but it should also "hum". Mine only clicks when you apply or remove a charge to it. No humming.
boschmann
11-10-2004, 03:57 PM
I think reference to humming is bascally that when the engine is running it opens & closes at a prescribed frequency or duty cycle. If it opens & closed when voltage is applied & isn't physically clogged or jamming then it should be okay.

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