KTAG, PCMFlash, Galetto FGTech V54, Smok Multitiool UHDS, I/O Terminal, Fiat/Alfa IAW Bosch Decoder, UPA-USB, XPROG, FVDI, Orange5, Renolink, DiagBox, Can Clip, Xentry How does the system that cools the engine of your C3 work? All engines have a cooling system, which works by taking the heat from the engine to the radiator. This system is quite simple, and it includes the following parts: Coolant; Radiator; Coolant pump; Temperature sensor; Thermostat; Electric fan; The engine cools thanks to the coolant, or this one covers C3 2002-2009 1.4 8V (engine type TU3JP) - petrol, but if you have a different engine with 16 valves, this many not fit. The sensor for the temperature gauge is the one on the cylinder head, not far from the dipstick. Veco2002 wrote:Hi guys I just bought a c3 2007 1.1 air plus , the outside temp on the consoul screen not working tried to find the temp sensor on the driver mirror but nothing there may you please help with how to sort out it and what steps should I take to turn it on or replace it thanks Replace if necessary. Check that the coolant temperature (ECT) sensor type is correct. Replace if necessary. Citroen C3 2nd gen. - ALL MODELS FROM 09/2006. Issue - Irregular sound from the gear belt space. Cause - Water entering the gear belt covers causes corrosion. Repair - Replace the timing belt with the tensioner pulley. Citroen C3 II 1.4 8V Causes. A code P0118 may mean that one or more of the following has happened: A bad connection at the sensor. An open in the ground circuit between the ECT sensor and the PCM. A short in the voltage feed between the sensor and the PCM. A bad PCM (less likely) On the other hand, it could be due to a defective coolant temp sensor or a bad temperature gauge. Here is a more detailed list of the reasons why your car temperature gauge goes up and down: 1. Bad Thermostat. The thermostat is used to regulate the temperature of the coolant. If it starts to fail, it can act erratically, causing the gauge to On my 52 plate diesel C3 the outside air temperature sensor is in the OS (Drivers side) on a right hand drive car. Here is a picture of the exposed Exterior C3 Temperature Sensor: I have not had a look inside either side, so I can't say what the connections look like, but I am surprised citroen supplied the wrong part if they know the DyqgEKw.