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04-29-2003, 05:13 PM
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Registered Member
Join Date: Oct 1998
Location: Rogers, MN
Posts: 2,089
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I've been through this recently. My ECU burned out last summer and I decided to get a brand new one from Ford. They gave me the wrong one, though. The symptom was that it wouldn't return codes. I decided to purchase a used A9L from Mustang Parts Specialties, installed it and it started reading codes. My Mustang runs great now after sitting since last May.
I would start by installing it and running the KOEO test to see if you get codes back. If you do, start it up and see how it runs. The dealer I went to said that they have no way to test the computer. The sticker over the back port is the service port. They use that at the factory.
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351W 89 Mustang GT Convertible |
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