WHICH ECM FOR CAR PLEASE

1987 Cadillac Hearse

Tiny

prodisco

March, 16, 2010 AT 3:38 PM

Engine Mechanical problem
1987 Cadillac Hearse V8 Front Wheel Drive Automatic 92,000 miles

Got a 1987 Caddy Fleetwood 4.1ltr FWD (on the vin it's classed as a Brougham) hearse, trying to find which ECM module it might be, as it runs rough, and you have to advance it nearly a quarter turn to keep it running. Done a full service, and it still runs rough. Based in the UK, and my local garage don't have any OBD1 details! Trying to set it up on a laptop, for accurate readings, instead of just using flash codes.
Thanks for any help to answer this! My vin is 1GEDZ9085H4221090 if this will help. I have got a workshop manual on the way from the states - but this could be 3 weeks away.(AARRGH!)

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