Question about 1998 Ford Escort

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Temperature sender The alternater light comes on when the temperature sender is connected. On first turn of key the gauge moves into the red and does not return when the starter is engaged and engine starts lighting the alternater warning. disconnect the sender and follow the same procedure and the needle returns when started. The sender was changed because the unit fell to pieces

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  • fino Jul 02, 2008

    Thanks for advice will check this.

    The fault was not apparent when the old unit was fitted, and the sender is a new genuine ford part. Could you inform me if the sender is normally open or closed

  • chrisn75 Aug 04, 2008


    Same fault . Traced positive (white /red tracer) wire from temp sender back to a black plug in front of left headlight . found connector to be burnt repair connector still have same problem. from the plug at the headlight the wire changes to a (blue wire with a black tracer ) that runs to the alternator.

    the blue wire has alternator voltage with temp sender disconnected alternator charges Connect temp sender alternator stops charging

    Do I need to change the alternator?

    Do you have any other suggestions?



  • Patrick McGee
    Patrick McGee May 11, 2010

    Sounds like a short in sender or wiring. A short to ground on would cause a huge voltage drop and drain. Check wiring for short's with continiuty tester.



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Try removing the battery cables so the computer will be reset. Leave it off for about 15 minutes. Then reconnect it. The computer will reset to the default settings. Every time the battery is removed and stays disconnected for 15 minutes or more, it will reset itself.

Posted on Sep 19, 2008


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