vss pulse fun

[Bob Valentine]

My pinout shows the '730 ECM has a 4000 ppm output on pin B11 for the
speedo.   The 2000 ppm output on pin C1 is shown going to the cruise
control unit.  

-> Bob Valentine
-> bob at tecmark.com

At 11:39 AM 5/21/2001 -0400, you wrote:
>I have a riddle, or maybe a story problem or whatever you want to call it.
>Ok here is my mutant car and what the problem is.  I have V8 Fiero with a
>Fiero VSS sending a 2000 pulse per mile signal to the 91 Camaro tpi ECM and
>prom, which I am not sure, but I believe, sends the signal in kind to the
>speedometer.  My problem is that I have a dash from a Cadillac that I want
>to put in the car but it requires a 4000 pulse per mile signal.  Is there a
>way to have the ECM double the pulse rate and send it to the Speedo?
>
>Thanks
>Matt
>
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