GM TBI info needed

[Kevin Crain]

Question about this VSS thing.  I'm swapping an '88 Pontiac ECM and TPI
system into my '82 Camaro Z28.  The Camaro used the VSS setup described
below; the Pontiac GTA used a VSS sending unit mounted in the
transmission.  If I read the book right, the 4000 pulse/mile output this
VSS sent to the buffer box is knocked down to 2000 pulses/mile before
being sent to the ECM.

I'm wondering if I can just use the '82 existing VSS signal as input for
the '88 ECM.  Anyone know?

Thanks,
Kevin

On Fri, 18 Sep 1998, Steve Ravet wrote:

> The Vss sensor probably was built into the IP cluster, driven by the
> speedo cable.
> It's a little metal paddle attached to the speedo cable, with some sort
> of LED sender and receiver straddling it.  2000 pulses per mile.