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Recent content by Tznfnn

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    1994 Mercury 200 EFI Mystery Box

    There it is! The little black box I have too tap on.. it’s a water sensor module.. interesting. I don’t think it has much to do with the fuel system, it just needs to work as a ‘system’ or a circuit to make everything happy. Great info.. thank you!!
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    1994 Mercury 200 EFI Mystery Box

    Thanks for the info, your time is much appreciated!!
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    1994 Mercury 200 EFI Mystery Box

    There’s a ground on the front and two additional wires.. a purple and green. I have to tap on it constantly to keep the fuel pump running.. it’s become unreliable at this point. I’ve been doing it forever, and it gets worse if it sits for a while. It’s gotten to the point it needs replacing.
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    1994 Mercury 200 EFI Mystery Box

    1994 Mercury 200 xRI fuel injected, serial number OG110862 I suppose O’s could be a zero or the letter O, not sure.
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    1994 Mercury 200 EFI Mystery Box

    Hi all! New to this forum..good stuff! thankfully I haven’t needed one for problem solving until now. There’s a little black box on the front of the motor that I have to tap to get my fuel pump running.. does anyone know what this is?? It’s been a thing for a long time, but manageable.. not...
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