3800 series II swap, please read :)

TK terryk at foothill.net
Sat Jul 10 15:47:07 GMT 1999


First what does DRAC stand for and second, no. VSS to the PCM. 2k and 4k
output to speedo, TFE, ABS and ride control.

Terry
-----Original Message-----
From: CSH-HQ <nacelp at jvlnet.com>
To: gmecm at efi332.eng.ohio-state.edu <gmecm at efi332.eng.ohio-state.edu>
Date: Saturday, July 10, 1999 8:39 AM
Subject: Re: 3800 series II swap, please read :)


>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/
>>>
>>>
>>
>
>




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