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Ford focus 1.6tdci temp problem

wslimazzz
wslimazzz
in General Ford Related Discussions

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Hi there i wonder if anyone else have a problem with the engine temp gauging up and down in the winter the temp outside is -8c and the engine temp keeps jumping from 70c to under 60c changed the termostat but it didnt make any different. And what does this button do i cant find in manual 

IMG_20211206_164413-min.jpg

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    Think it might be for the emergency parachute deployment, it only works if you're going faster than 99MPH 🤨

     

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    If -8c isn't a typo (guessing you're not in UK!) then the 1.6 TDCi will really struggle to maintain coolant temp in that as they're so thermally efficient.  Keeping the heater off might help, but that's not ideal I know.

    The left hand button is for the heated windscreen.  Right hand for heated rear screen.

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    • Author

    How about adding a cardboard blocking the wind going into the radiator would that work?

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    12 minutes ago, wslimazzz said:

    How about adding a cardboard blocking the wind going into the radiator would that work?

    No.  There's no flow through the radiator while the thermostat is closed anyway.

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    • Author
    20 hours ago, TomsFocus said:

    If -8c isn't a typo (guessing you're not in UK!) then the 1.6 TDCi will really struggle to maintain coolant temp in that as they're so thermally efficient.  Keeping the heater off might help, but that's not ideal I know.

    The left hand button is for the heated windscreen.  Right hand for heated rear screen.

     

    6 hours ago, TomsFocus said:

    No.  There's no flow through the radiator while the thermostat is closed anyway.

    Ok so adding more glycol will increase the boiliing point

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    • Author

    Seems like adding 20% more glycol etc 70% glycol rest water solved the problem

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      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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