Overheating issue FORD Fiesta Mk5 Hatchback (JH1, JD1, JH3, JD3)
11.11.23
19.04.25
@Toorandre7613.11.2023 12:10MemberHi, most likely you did not deflate the system when installing the thermostat. Either you have a faulty sensor or the fan is not turning on, recheck everything and try to deflate the system.Spare parts for your FORDWorking on a FORD? Find parts and accessories suitable for your vehicle in the AUTODOC shop:
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FORD ESCORT IV (GAF, AWF, ABFT) 1.6@Coop05.07.2024 02:32MemberOlder cars can overheat in slow/stationary traffic, a little known way of bringing temprature down is to turn blowers on full and have windows open. doesnt take long for temp gauge to fall,- @user_298166729.10.2024 03:01MemberCould try bleeding the system again? I know someone mentioned it but sometimes it takes a few attempts, my cousins fiesta was similar.
- FORD S-MAX (WA6) 2.0 TDCiT. S.19.04.2025 20:47MemberYour radiator core could be plugged up. Try taking the top and bottom hose off and running a hose pipe from the top and then bottom to see the flow. Couod just need a new rad or as said a temp sensor. There was a reason why one of the owners removed the thermostat! To try and rectify the issue, that would never work. Prestone do a good rad and system flush that could help...
Hi all,
I just changed my fiesta’s thermostat (and coolant in the process) as the car was not heating up correctly. I found that someone has previously removed the thermostat and there was no thermostat to replace. Nonetheless, I added the new thermostat. Nothing else was changed about the car.
After about 20 minutes of driving, the engine overheating warning light came on. I subsequently turned off the car before, letting it cool down before returning home.
Please could you advice why the engine may have started overheating and what action to take to fix the car ( I am keen to fix it myself)? Any help would be massively appreciated. Prior to adding the thermostat, I had no overheating issues.
(Note: The water pump was changed about 6 months ago. The temperature gauge appeared to move quite quickly, even decreasing in temperature by about 15 degree’s despite little change in driving speed – perhaps a sensor issue?. But why would that only become an issue after adding a thermostat. Also the internal car heater does not work, I plan on changing the heater control valve).