Lincoln Town Car

Hi there I hope you can help because ive run out of ideas

I have a 1994 Lincoln town car 4.6l with auto transmition and about 134,000 miles
at the beginning of the year I replaced the engine due it being cheaper then repairing the old one I have had the car running for about 3 hours but now it will only run for about 10-15 mins then cuts out I have had a code reader on the car and done a KOEO it comes up with a code of 512 PCM/ECA (kam) error does this mean that the onboard computer is faulty and needs replacing or is there other things that I need to do. If you need any other information please ask

Thanks in advance

September 12, 2007.

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