THE ECU/PCM CUTS SPARK AND FUEL MANY WAYS.
ON PURPOSE;. TO AVOID CRASH AND BURN AS SEEN NO TV.(&BY LAW)
SO CHECK FOR SPARK ON ALL SPARK PLUGS.
THE ECU DIAGNOSTIC JUMPER MUST WORK 1993(Or as book says)
IF NOT FUSES ARE BLOWN,
WHEN THE PCM SEES (MEANS DETECTS) ANY KIND OF SPARK FAILURE
IT CUTS FUEL FAST , ON PURPOSE
SO THE PCM MUST BE SCANNED TO SEE WHY.
YOU HAVE NO SUPER REAR OB2D FORD SCAN TOOL
SO THE JUMPER WIRE METHOD MUST TIRED, AND MUST WORKL
FIND THE SERVICE MANUAL IS THE FIRST ACT DOING DIY/ OR FAIL.
ALL THE FACT ARE THEY ,BUY ONE USED OFF FLEABAY.
PAPER BOOKS BACK THEN, NO PDF'S AT ALL OF 1000 PAGES YET.
ALSO I BET THE INJECTORS ARE ALL CLOGGED. FROM BAD FUEL
CAM SENSOR DEAD ?
ICM DEAD.
30 YEAR OLD SPARK WIRES ARE NEVER GOOD.
OLD SECRETS FROM 30 YEAR OLD BOOKS ARE NOT EASY TO FIND
I SEE THIS VAGUE HINT
Self-Test Input (STI) connector and the signal return pin of the Self-Test connector.
ONCE SPARK IS WORKING AND TIMED RIGHT
THE TEST FUEL SPRAY INSTANT START WORKS TO HEAR ENGINE RUN FOR 3 SECONDS EACH TRY AND HEAR IF ENGINE SOUNDS GOOD.
my wild guess , is use the ford way
https://youtu.be/-YYQKssOEOs
or search here this way
https://www.youtube.com/results?search_query=1980+to+1995+mercury+odb1+trouble+codes
the flash codes must work
or the ecu is bad.
power ecu is dead, 12vdc is 0vdc, ground to ecu bad.
again all fuses check, as in ALL.
first.
this guy discovers photo lights. so we an see, amazing,
https://youtu.be/CnQw6xMAYlE
if the jumper is missing?
it is just a 2 american made FASTON(tm) jumper, male
to a 18awg wire (18 is stronger and more robust) size does not matter only that it lasts. 20 more year,s grin
or use a unbent paper clip, of steel not plastic of any kind ever.