those same counters were used on mid series 1500 squaretails on the
speedo cable as well.
no O2 sensors on those cars (or carbe'd 6, 7's or Stags either)
On Spits it was to check the catalytic converter, EGR. air pump etc.
ptegler
On 3/6/2021 2:36 PM, Q wrote:
> If memory serves me it is used at the age counter which triggers a
> light on the dash when it is time to replace the O2 sensor. It is
> still a one to one ratio unit.
>
> The speedo cable is two piece unit. The first section ends at the
> counter which is basically an odometer but shows percentage till
> replacement rather than mileage. When it rolls over it triggers the
> dash light. There is a special key to reset the counter thus turning
> the dash light out. I think that it measures 40,000 miles which is
> the estimate life of the O2 sensor.
>
> The second section of speedo cable runs to the speedometer from the
> counter. The counter sits just below the brake master cylinder in a
> tight spot thus the need for the right angle drive.
>
> Edward Hamer
>
> Petaluma CA
>
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Paul Tegler
ptegler@verizon.net www.teglerizer.com
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