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Mk6 fiesta overheating and no coolant fan

Tom81
Tom81
in General Ford Related Discussions

Featured Replies

Hi all, I am having trouble diagnosing the problem, car is a 2005 1.4 fiesta. 

It's overheating in traffic and boiling over and the fan isn't coming on, this is a list of what's been changed so far

1. thermostat 

2. water pump

2. temperature sensor 

3. relay

Fan comes on when wires are disconnected from temp sensor.

I've had a look and found posts for similar but never a fix any ideas or tests would be appreciated thanks

  • Quote


    To the Fiesta section with you ---------->

  • Quote

    sorry but it appears your head gasket on your car may have blown

  • Quote
    • Author

    Thanks for the reply, quite sure it's not the head gasket as compression test was good and no loss of oil or water.

    Could the heater control valve cause these symptoms? 

    Heater does everything it should, ie blow hot and cold air.

     

  • Quote

    Start with the basics (& cheapest options)

     

    Try the fuse first.

  • Quote

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    • The Digestive Forum Roundup (24th May - 31st May 2026)

      Steve ·
      The Digestive Forum Roundup (24th May - 31st May 2026) We hope this email finds you well and enjoying your week. As always, our forum has been buzzing with activity, so we’ve compiled the highlights for you. Plenty of interesting discussions are taking place, especially around the Ford Focus and Fiesta models. Starting off with the Focus, many members have been discussing issues with the Emergency Call System, particularly in the Mk4 model. PLB raised concerns about persistent malfunctions, a se
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