Water lose from the raditor on a citreon c1 - Cars & Trucks

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its the lead from the sensor to the vehicle wiring harness/connector thats open circuit especially if its on the front

Check spark plugs and wires.

The anitfreeze might not be good enough and the coolant is frozen or slushly so it does'nt circulate. The therostate can be stuck or the raditor fans could be bad. With the gauge hot is the raditor hot too? All over? The raditor can be partly plugged. The raditor needs to be brimming full and the recovery coolant tank needs to bein the hot to cold range.. Water is'nt the only thing that's in the coolant as without antifreeze it'll freeze and not circulate.

Probably head gasket, very common on those engines.

Two things it might be the cars raditor fan doesn't work, or the therostate is sticking. ( the gauge does'nt have to be right) the other thing might it need a new raditor cap. Most all cars pust raditor fluild to the overflow when thier shut off if it's low it'll be gas not coolant. the hose between the cap and the tank may have a small leak and it's not sucking the coolant out of the resivoir back to the raditor. The system is designed to be completly full(no air). If you can remove the cap with the car cool and it's not full clear to overflowing the cap or the hose is bad. Being it's nor leaking I'd go with the cap. Get the kind that came with the car not one with a lever.

Sounds like the raditor fan has stopped working. Cheak to see that it does and if it does then wash the raditor with soap and water trying to blow water though from the engine side out the front as maybe ait can't get though cause of bugs or dirt. after that the raditor can be flushed if it's not too dirty but modern raditors if not flushed before you have troble need to be replaced as they don't flush well after they stop up.

If water pump leaking replace both, if not and truck is over heating start with thermostat.

1 Inspect Hose Ruptured, Cracked or Leaking Raditor Hose. 2 Inspect Head Gasket Leaking Head Gasket. 3 Inspect Thermostat Thermostat Stuck Closed. 4 Inspect Raditor Cap Worn or Damaged Raditor Cap. 5 Inspect Raditor Raditor Fins Obstructed. 6 Inspect Belt Missing or Broken Water Pump Belt. 7 Inspect Heater Core Heater Core May Be Leaking Antifreeze/Coolant into The Vehicles Floor Area. 8 Inspect Intake Manifold Gasket Leaking, Worn, or Damaged Intake Manifold Gasket. 9 Inspect Cooling Fan Switch - Raditor Faulty Raditor Cooling Fan Sensor/Switch. 9 Inspect Water Pump Leaking Water Pump. 9 Inspect Raditor Fan Motor Faulty Raditor Cooling Fan Motor. 9 Inspect Relay - Raditor Cooling Fan Motor Faulty Cooling Fan Relay. 9 Inspect Fan Blade Broken, Missing, or Faulty Fan Blade(s).