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*Wiring temp sender to kick fan in?*

Discussion in 'Automotive Electronics' started by Htedger, Apr 13, 2017.

  1. Htedger

    Htedger New Member

    Apr 13, 2017
    2003 Fiesta 1.25: had problems with the fiesta overheating even though temp gauge says normal temp on dashboard. After box ticking all the usual culprits (relays, fuses, isolating fan to test it works which it does etc) found out it's the ECU ignoring any messages from the temperature sensor. Decided to bypass the ECU by cutting through the top radiator hose and fitting an aftermarket inline sensor adapter and temperature gauge with sensor. Has anybody fitted one of these so that it works the aftermarket gauge as well as kicking the fan in when the engine starts to overheat. Please could you give me some advice as there are no instructions or wiring diagrams and electrics aren't my thing or if anyone knows of any YouTube videos that are actually useful that would also be appreciated. Thanks.
  2. hyedenny

    hyedenny Member

    Jan 17, 2009
    This might sound like a silly question, but what -- specifically -- makes you think it's overheating?

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