P1136 Fan control circuit Malfunction. P1137 Lack of HO2S 2 switching – Sensor indicates lean. P1138 High pressure rail sensor fault / Lack of HO2S 2 switching – Sensor indicates rich operation. P1139 Water in fuel indicator circuit Malfunction. P1140 Water in fuel condition. P1141 Fuel restriction indicator circuit Malfunction. 3. Rough engine idle and misfires. As your oxygen sensor is going bad you may notice your vehicle is running rough, misfiring or running irregularly while idling. You may also observe other engine performance problems, such as loss of power, hesitation, or stalling. Since the oxygen sensor output helps control engine timing, combustion Following may be of use from the RTA French manual and Haynes manual. - thermostat starts to open at 89°C and full open at 101°C. - high temperature switch set at 118°C. Single wire sensor, putting the connector to earth may start the fan and give full scale on the bars. - radiator fan has 2 speeds depending on engine temperature and air con. Replace the sensor. What you say gives the impression that it it too close to the engine and is reading engine compartment temperature rather than ambient temperature. These sensors are usually located under the front of the car away from the engine and radiator.
For MFI engines, the coolant temperature sensor is located on the intake manifold water jacket or near (or on) the thermostat housing. Fig. 1: Engine Coolant Temperature (ECT) sensor and connector. Fig.: Engine Coolant Temperature (ECT) sensor location-3.1L (VIN T) engine shown. Hope this helps (remember to rating this and leave an testimonial
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    • citroen c3 temperature sensor problems