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Hi, <p>I have a 1982 240 and the frequency valve just started buzzing today when the car is turned off. It runs fine but the valve buzzes all the time with the key removed and the ignition off. What controls this valve? The valve itself is around $170 and I don't want to replace it if it's actually the control unit that is sending current when it shouldn't. Any ideas?<p>Thanks!<br>Alex<br>
 

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Re: Frequency valve buzzing (atatistcheff)

Welcome to Swedespeed, Alex.<p>Check for a bare wire touching metal allowing power to the valve when all is off.<p>George Dill<p>
 
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