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  • VSS Signal

    Is the vehicle speed sensor signal a voltage, a pulse, a current, or something else?

    How does the pcm know how fast the car is going- what exactly does it read off the VSS?
    All gone :(<br />Best ET ever: 14.3 (I think)<br />----------------------------<br />Check out my site for exhaust clips, burnouts, and pictures, and the supercharger throttle body mod.<br /><a href=\"http://www.geocities.com/net_addict/index.html\" target=\"_blank\">Click on the Firebird</a>

  • #2
    Its a magnetically created pulse. The old VSS was only good from 0-255mph (8bit) but I think the new ones are a lot more accurate and are 16bit.
    2002 5-spd NBM Camaro
    Details: www.1lev6.com

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    • #3
      Re: VSS Signal

      ressurecting this post...

      i changed my Tranny from a 1994 t5 - 2000 t5. the problem is the VSS is different now. i got the right plug for it...plugged it in and the speedo is goin whacko - at 8mph the speedo says im doing 80. i topped the speed governor @ a whopping 15 mph!

      so any thoughts on how i could adapt this to work for my car? resistors - etc...

      any help would be greatly appreciated as i dont have the time/money to adapt the old VSS to the new sensor.

      thx.

      hybrid - \'\'hI-br&d - The offspring of a cross between species.
      Co-Founder West Coast F-Bodies
      West Coast F-Bodies Car Club - WCFB Message Board

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      • #4
        Re: VSS Signal

        Take that sensor out and put the old one in .

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        • #5
          Re: VSS Signal

          annnd if that isnt an option?

          i.e. - if the tranny currently in the car cant use the old sensor...

          what then.

          hybrid - \'\'hI-br&d - The offspring of a cross between species.
          Co-Founder West Coast F-Bodies
          West Coast F-Bodies Car Club - WCFB Message Board

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          • #6
            Re: VSS Signal

            go buy a sensor . you dont have to pull the trans to change the sensor

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            • #7
              Re: VSS Signal

              there completely diffrent pulse patterns . not interchangeable.

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              • #8
                Re: VSS Signal

                Originally posted by CHEVYINSIDE
                go buy a sensor . you dont have to pull the trans to change the sensor
                the problem is that the sensor in the 2000 trans is an effect sensor like the camshaft position - whereas the old vss in my 1994 trans is a gear driven sensor.

                i cant use the original sensor with the new trans due to the fact that it would have nothing to drive the sensor.

                any ideas?

                hybrid - \'\'hI-br&d - The offspring of a cross between species.
                Co-Founder West Coast F-Bodies
                West Coast F-Bodies Car Club - WCFB Message Board

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