If I replace my ECU

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07-08-2007, 12:49 AM

MustangMike2001

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Join Date: Sep 2006

Location: Nashville, TN

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If I replace my ECU

If I replace my ECU with one from a donor vehicle will I need to take it to a dealer or will it work?

07-08-2007, 01:02 AM

89 fox

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Join Date: Jun 2006

Location: BATON ROUGE

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RE: If I replace my ECU

if it is an 01..yes...it will need to be reflashed with your info

07-08-2007, 01:26 PM

Colorado_Mustang

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Join Date: Jun 2006

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Posts: 4,089

RE: If I replace my ECU

The ECU has a program code on the box. If these codes match, no reprogram is necessary. If they are different, you'll need the ECU flashed with the right codes.

This would be a good time to go with an aftermarket ECU, however. Check out the options listed at www.fordfuelinjection.com.