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PCM Replacement

Tiny
ROTORHEAD
  • MEMBER
  • 1998 MERCURY MYSTIQUE
  • 210,000 MILES
Hello there, thanks so much for taking the time to answer my question! I have a 1998 Mercury Mystique with a 2.0L DOHC Zetec engine (same as Ford Contour). I'm going to install a used PCM/ECM from a wrecker (as it's discontinued from Ford) with the exact same part number so all the software will the be same. The vehicle is a base model without the Ford PATS key system. My question is can I just install the new-used PCM and go or do I have to have it done at the dealer and coded to the vehicle to make the car run. I have different people telling me different answers on this one. Thanks again, John.
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Sunday, July 10th, 2011 AT 10:53 PM

2 Replies

Tiny
WRENCHTECH
  • MECHANIC
  • 20,758 POSTS
No, it needs to be programmed first. I would strongly advise against a used PCM. There are plenty of rebuilders out there.
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Sunday, July 10th, 2011 AT 11:06 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Try it and see what happens don't work bring it in and have it reflashed-
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Sunday, July 10th, 2011 AT 11:07 PM

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