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1999 Focus Ghia 1.8 Tddi Engine Temperature

Robert Petch
Robert Petch
in Ford Focus Club

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Hi, I'm a new member. I have a 1999 Focus 1.8 TDdi which has done 99'000 miles. I have had a lot of work done on it and it runs like a new car but recently I've noticed the temperature gauge isn't going up as far. The heater is luke warm. Under harsh acceleration the gauge seems to go up to halfway but when I take my foot off or slow down it drops to about 1/4 of the way up. Could this be the thermostat stuck open?? Thanks for any advice or help anyone can offer..... Robert

  • Quote


    It does sound like the stat is stuck open. Should be an easy fix. Good luck

  • Quote
    • 1 month later...

    either thermostat stuck or you have an airlock in the system

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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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