Technical Questions

[Shannen Durphey]

Interesting note.  ASMN is for a car with a steel hood, option T46. 
Anybody with enough Caddy experience to know what that is?  Current
part# that I show is the 0342.  There is a listing of proms in
bulletin # T904A.

Shannen

Ludis Langens wrote:
> 
> "Andrew K. Mattei" wrote:
> >
> > ECM Info: Svc #1227730 AAWU 865261 M612491005 (From wrecked 87 Cimarron)
> > Cal-Pack: 1A7307  ADRY 2642
> >   Bar Code inside ECM: 142089108276245 (NOT speed density)
> >
> > The dealer's listing is confusing; he says he shows the same numbers for a
> > Cal-pack, with a note saying "use with speed density kit," The problem, is
> > that this Cal-pack is clearly NOT a speed density type.
> 
> The progression of replacement MEMCALs is this:
> 
>   AAWU5296 -> ADRY3193 -> ADRY3192 -> ASMN0705
> 
> If you wish to order the ASMN, the likely part number is 16140342,
> though it might be 16140381 or 16140705.  The AAWU and ADRY codes are
> too old to be the SD upgrade.  ASMN is just right.
> 
> You might also try getting ARDC4854.  Likely 16134468, but could be
> 16134761 or 16134854.  This is the terminus of another MEMCAL chain.
> This one is for 1988 2.8's w/ MD9 automatic, possibly including the
> Cimmarron.  (ASMN is for 87's.  You say you have an '88 transaxle -
> there might be a difference.)
> 
> There is another pair of chains for California models.  Since AAWU and
> ADRY are federal, I assume you don't need a California chip.
> 
> > 1. Is it possible to replace just the eprom on the cal-pack, and if so,
> > how? (I didn't want to ruin a good one experimenting)
> > 2. I understand the 1227730 ECM uses a 27C256 EPROM. I have EPROM
> > programming capability, do you know where/how I could download the data for
> > the correct EPROM for an 87/88 Cad Cimarron, 2.8L, digital dash, speed
> > density modified?
> 
> No need to replace the EPROM.  You can reprogram it in place.  You'll
> have to build a simple adapter to connect the MEMCAL to your burner.
> 
> > 3. What functions are performed by the resistor pack on the Cal-Pack, and
> > are they all as different as the variations in numbers would seem to
> > indicate?
> > 4. What are the 14 and 16 pin DIP ICs mounted under the resistor pack, what
> > are their function(s), and do these two parts differ between Cal-Packs?
> 
> The 14 & 16 pin DIPs _are_ the resistor packs.  These should be the same
> for any 2.8 MEMCAL.  The thick film thing above the DIPs is for your
> knock sensor.  There seem to be two versions of this for the 2.8 -
> probably interchangeable.  This means that if you get the correct EPROM
> content for you appication, you can program it into any 2.8 MEMCAL.
> 
> I don't have any of the EPROM contents for the four MEMCALs listed in
> the progression above.  There are as many as 44 different MEMCALS for
> the 2.8 in a Cimarron.  (88 for a 2.8 in any J-body.)  Nine of them
> might be Cimarron 2.8 SD MEMCALs.  I have a good collection of 2.8
> MEMCALs - and a good portion of those are the SD upgrade.  However, I
> have none of the nine that you might be able to use.  (I don't know if
> I've even seen a Gen II 2.8 Cimarron in the wrecking yards...)
> 
> --
> Ludis Langens                               ludis (at) cruzers (dot) com
> Mac, Fiero, & engine controller goodies:  http://www.cruzers.com/~ludis/
> 
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