Ford EEC IV Computers/Intel- Motorola # ?

[AL8001 at aol.com]

In a message dated 98-08-09 01:03:48 EDT, amexon at ozemail.com.au writes:

>Does anyone know if all EEC IV computers as fitted to Ford vehicles are the
>same (interchangeable)?
>Do they all have the same part number?
>Do they have different part numbers for different vehicles?
>
>I believe mine might be faulty and as my model of vehicle (1986 5.0 litre
>F150) is uncommon in Australia, I would like to know whether or not I can
>just take one from another Ford that uses an EEC IV.
>
>Thanks in advance,
>Tony
>
>

Not all Ford EEC- IV computers are the same. Ford uses a soldered in prom so
every engine/trans/ body has a different #.  Though there are basic series of
computers with different part # and the same computer board.

Look on the sticker in the area that says " EEC-IV" near by there will be a
fuel system code. Also heat stamped( not the molded connecter # ) on the ECM
connecter there will be a engineering # , this should be the base un programed
ECM #.  

You may be able to get a ECM that is more common then swap your PROM

 From my stack of Ford computers come these codes:

Code on
sticker               Car                            Engineering #
Part #

CFI-SD         86 LTD V6 T body inj       E4LB-14A624-BB
E4VF-12A650-E1A
                    Map system

EFI-TC5       85 XR4Ti 2.3 Turbo          E5ZB-14A624-AA
E5ZF-12A650-K1A
                   Multi port inj Bosch
                   L Jet flap air meter

FBC-DLX5   85 Ranger Tk 2.8 V6         E4LB-14A624-AC
E57F-12A650-C1A

CFI-SD11   88 Escort 1.9 T body         E6D8-14A624-MA          E7EF-12A650-BC
                 inj MAP air flow

EFI-MA35G  90 Explorer V6                E9AF-14A624-AA
F07F-12A650-ABB

Now for my question. Anyone have a interchange for a Intel Prom or Motorola
chips?  ( I tried the Intel web page, all they show are PC CPU chips and the
Motorola page didnot show  a 81C61A chip).  I'm mostly interested in the
Merkur chip info.

The Escort ECM has a windowed Prom "D8763-1     N73120FRN    S56014"  With a
big dotted " i " to the left. Intel?  The sticker on the outside of the ECM
says 32K Prom.   The CPU is a Motorolla 81C61-A,  A Motor web search showed
nothing.

The Merkur XR4Ti  has a silk screened rectangle around the outside of one
chip, ( enough room that a socket could be installed and still show the notch
for chip orientation).      No window on the chip " 6128B-1895   8001EN083"
With a big " T " on the left.   There is also another chip "78001FEN085" with
a big " i " to the left, Intel? the chip also says " ( symbol for copyright)
Fo Mo Co "  and " (symbol for copyright) ' 80.

The Ranger ECM has the "78001FEN085" Intel chip. The silk screened rectangle
chip says " 8001EN063 < not my typo)  8430A C251353   NCR 6093800062 "

The Explorer ECM  has a "87C 66  480   N74130FEC " windowed PROM  and a 81C62A
chip.

Thanks