Mechanics

WILL A 96 ECM/COMPUTER WORK IN A 99 ?

1996 Mercury Marquis • 120,000 miles

I have a 99 grand marquis motor in my expedition(i did a 5.4 to 4.6 swap) and I was told too change the ecm cause its smoking real bad and the car was crushed and I was wondering would a 96 marquis ecm work?
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Damien12
July 18, 2012.



It might but your wiring probably changed as well a what hooks up to what. I wouldn't suggest it besides it needs to be the same engine/trans. Etc. I may damage other components

Hmac300
Jul 18, 2012.