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Wont start

dougp78
dougp78
in Ford Focus Club

Featured Replies

I have 2006 focus engine ran perfect but trans was bad so i put engine in another 06 focus only differenxe os i took it from car with auto and put it in manual one now it doesnt start i was told change computer to original from automatic car which did nothin. It will not even crack with that computer please someone help

  • Quote
    • Confused 1


    I suspect that your workmanship matches your command of written English which is careless and unintelligible. There are several pieces of information that you need to supply in order to give anybody a chance to help. Read what you wrote and see if it makes any sense to you.

  • Quote

    The ECU (computer) is coded to the immobiliser so it will never start by just swapping the ECU.

    You could try swapping the GEM & cluster as well, as they are all coded together.

    However, if you only changed the engine for an identical one, then the ECU shouldn't even know.  Only thing I can think of at the moment is that the crank sensor could be in a different place if the manual version picks up from the flywheel.  Which engine type is it?

  • Quote

    Injectors might need swapping in the correct order from the old engine to the new one as they are coded but nobody knows whether you have a petrol or diesel engine.

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    • The Digestive Forum Roundup (24th May - 31st May 2026)

      Steve ·
      The Digestive Forum Roundup (24th May - 31st May 2026) We hope this email finds you well and enjoying your week. As always, our forum has been buzzing with activity, so we’ve compiled the highlights for you. Plenty of interesting discussions are taking place, especially around the Ford Focus and Fiesta models. Starting off with the Focus, many members have been discussing issues with the Emergency Call System, particularly in the Mk4 model. PLB raised concerns about persistent malfunctions, a se
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