WILL A 96 MARQUIS ECM/COMPUTER WORK IN A 99 MARQUIS?

  • Tiny
  • damien12
  • 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?

Wednesday, July 18th, 2012 AT 1:10 AM

1 Answer

  • Tiny
  • hmac300
  • Expert
  • 42,102 posts

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

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Wednesday, July 18th, 2012 AT 2:12 PM

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