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Replaced ect sending unit and now temp gauge does not woek.it is running at operating temp and injectors are working fine, so there is a signal to computer, why no gauge?

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  • Ford Master
  • 6,826 Answers

Maybe wiggle the wires around the harness and see if it's a bad connection to the temperature gauge.

In this case, I assume that it has more than 2 wires, and that one of the wires may not be connecting properly at the harness or the wire is broken inside of the insulation, or the gauge has gone bad (not as likeley).

Good luck on this repair.

Posted on Nov 09, 2010

  • Duane Wong
    Duane Wong Nov 09, 2010

    It's not as likely that the gauge has gone bad, rather.

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USA answer, not in usa , ignore my post or post country?
it can only be 3 problems, alldata.com covers the simple tests.
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see:
factory FSM or alldata.com.

here is your type system, its no longer independent like in older years
quote:
The coolant temperature information is conveyed to the instrument panel, through the PCM, from the Engine Coolant Temperature (ECT) gauge sending unit. To test the gauge sending unit, first test the gauge operation to make sure the problem is not in the gauge or gauge wiring.
end quote.

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