The transistor in the tach had bought the farm.
My Tiger did the same Tacho-Tango. Packed it off to MoMa, and she set it
right.
Paul
On Saturday, January 12, 2002, at 08:48 PM, Geo Hahn wrote:
> Asking on behalf of a friend who drives a '69 Morgan....
>
> The car has a points ignition with an electronic tach. At times the
> tach needle swings wildly, most other times it reads correctly.
>
> I would guess the problem is in the distributor, not the tach... perhaps
> a chafed wire?
>
> ISTR a similar problem being discussed here -- perhaps it was on TR7?
> Anyway, I know this occurs with electronic tachs but couldn't recall if
> there is a typical cause.
>
> Thanks for any help.
>
> Geo Hahn
> 59 TR3A
> 64 TR4
> Tucson
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