Had a similar problem after installing a Crane 700 some years ago.
Increased the loop on the back from one to two and the problem went away.
At 07:57 PM 10/12/2005, Alan Schultz wrote:
>That is just the opposite of how my tach acts after installing a
>Pertronix. At low rpms I get no readings. After about 1500 rpm the
>tach begins working. Once I drive a couple of miles the tach again
>operates normally. I just live with it but wonder if looping the
>wire thru the pickup at the rear of the tach with two loops instead
>of one would help?
>
>Maybe someone on the list can help the both of us with the solution
>to our problems?
>
>Alan Schultz 67BJ8
>Watertown, WI
>
>BEAU2EVE@aol.com wrote:
>
>> I recently installed a pertronicx unit in my 1966 BJ8, and since
>> that time my tach is not accurate. It works at a idle but when I
>> rev it up it drops to nothing , Most of the time I'm driving I
>> have no tach, when the rev's drop below 12 to15 hundread it some
>> what comes back to life. Any thoughts on this? I'm quit sure the
>> tach was good before, you know CRS.
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