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    Re: Ford Transit D3FA 2003 - Non start, code P1631 main relay malfunction (power hold) # Archived Message

    Posted by colin stark on March 19, 2009, 6:25 pm, in reply to "Re: Ford Transit D3FA 2003 - Non start, code P1631 main relay malfunction (power hold) #"

    Thanks Tony, definetly not a voltage problem.
    I have found out a bit more about this problem, the garage that I was called to had changed the solenoid valve on rear of pump along with a small unit atatched to it with two wires, they tried starting and no joy [vehicle had been starting prior to this] then replaced with original unit and still no start. So, something has happened when they changed the unit, dont know what. I told them to try somebody who had a KTS to read pump codes direct and to see if it could be reprogrammed. Apparently they have had some one do that but this person says KTS cannot reprogramme pump. The garage says that codes were present but have not as yet let me know what they are. Does anybody know what could have happened when the solenoid was replaced to cause a non start and can a KTS programme it? I will post more info when I can, thanks Colin.

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