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Originally Posted by MB-Owner-in-ind
You really need a scope to pickup the weak signal. You could try a frequency counter but a scope will tell you the strength and shape of the signal which should be a square wave.
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Any idea where I could find one of these? Or someplace that might have one? I am right about the MB "diagnostic" tool aren't I? If so, they should be able to plug that in and get an RPM readout right? If they don't then I'd presume there's a pickup problem and that I'd just replace it.
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