xsara picasso overheat but not problem

[bustom65]

Hi i have a citroen xsara picasso 2000 1.8 it has started showing overheating even when cold its an intermittent fault and reading on here it appears to be a common fault what is the sensor at fault is it the one on the radiator or is there another??

thanks

[the_big_d]

There shouldnt be a sensor in the radiator, it should be the green sensor in the thermostat housing.

[bustom65]

Hi looking down on the radiator there is something on the side with wires going to it i assumed this was it ?????

[oldford]

Probably switch for the cooling fans.
Besides the sensor, it could also be the wiring to the coolant temperature sensor or a fault in the instrument panel.

[obdmaster]

Do a diagnostics on engine ecu, any fault codes to do with temp sensor or cooling fans will do this on the dash to signalise there is a fault on the cooling system m8.

[juniormaxxx]

some cars have it on radiator, and some on cylinder head its probably a green connector with 3 wires.....

[juniormaxxx]

or even 4 wires........you can test it by disconecting the connector if you do that while engine is idleing the fans should start, at full speed.......

[bustom65]

hi checked this it was on the block green only 2 wires disconnected it and fan came on full so replaced it and touch wood seems ok ta

[the_big_d]

Hi looking down on the radiator there is something on the side with wires going to it i assumed this was it ?????

Thats the speed control resistors.