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Wayne 962 Wayne 962 is offline
Author of "101 Projects"
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I forgot to mention that the valve opens almost completely when the throttle is revved up. Dropping down, it closes. Weird, but I would think that the operation of the valve should be the opposite. I'm going to bring in my oscilliscope tomorrow and check the engine speed sensor. If the engine thinks that it's at idle, then it will close the valve.

As for the tach, I'm not sure where it gets that signal from - probably from the distributor...

Wayne R. Dempsey, Founder, Pelican Parts Inc., and Author of:
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Old 11-28-2007, 04:13 AM
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