3800 series II swap, please read :)

[CSH-HQ]

Could there be a DRAC type unit involved where you have to resolder jumpied 
dividiers?.
bruce


>>From that I can tell, the speedo VSS output is just buffered VSS signal. I
>can move the divisor and road speed constant all over hell and the ECM
>changes but not the VSS output to the speedo.
>
>Terry Kelley
>-----Original Message-----
>From: Ludis Langens <ludis at cruzers.com>
>To: gmecm at efi332.eng.ohio-state.edu <gmecm at efi332.eng.ohio-state.edu>
>Date: Saturday, July 10, 1999 4:03 AM
>Subject: Re: 3800 series II swap, please read :)
>
>
>>> Kevin wrote:
>>>
>>> The problems the car is having is VSS,
>>> and idle. the VSS the ecm see's is much more than it should be. The
>>> 440 has a 14tooth generator, and the 4t60e has a 31 I believe. The ecm
>>> see's approx double (not sure cause I don't know my actual speed) and
>>> the speedo was way off, so I changed to the 2k output of the ecm, and
>>> it is still off by about 20% or so. hoping for any input on this?
>>
>>How are the VSS, speedo, and ECM wired up?  How were they in the 88
>>configuration?  And how were they supposed to be for the 92 computer?
>>
>>If the hookup is VSS -> ECM -> speedo, and the raw VSS is much higher
>>than 4000 ppm, then it may be possible to reprogram a divisor which will
>>affect the speedo.  Does your ECM have a chip with a part number of
>>45154 or 16045154?
>>
>>--
>>Ludis Langens                               ludis (at) cruzers (dot) com
>>Mac, Fiero, & engine controller goodies:  http://www.cruzers.com/~ludis/
>>
>>
>