Where Is The Engine Coolant Sensor C5

[Guest annette12]

Hope someone can help,,,,I am trying to locate the engine coolant sensor on a c5 estate 2002,,,I have located the header tank sensor,,,thank you.

[paul.h]

I had just put this on your other post, I had thought this was the sensor you had cleaned the connections on already.

 

According to Haynes, for petrol and 1.6/2.0 diesel engines, the coolant temperature sensor is located on the coolant outlet housing on the left hand end of the cylinder head. The RTA French manual shows similar for the 2.2 hdi engine.

[Guest annette12]

I had just put this on your other post, I had thought this was the sensor you had cleaned the connections on already.

 

According to Haynes, for petrol and 1.6/2.0 diesel engines, the coolant temperature sensor is located on the coolant outlet housing on the left hand end of the cylinder head. The RTA French manual shows similar for the 2.2 hdi engine.

Hi thanks for your reply, I cleaned the one on the plastic header tank, the one you can twist and take out, it has made alot of difference, but am told there is another, but do not know where to start looking for this one, proplems only ever start when cold /damp weather starts, so if I can locate the otherone I hope this may well do the trick,,,I have the haynes manual,,but trying to find it in the book has given me a headache,,,Thank you for your support

[paul.h]

It is in Haynes under the Cooling, heating and ventilation chapter, section 7, page 3.6

[Johndouglas]

Annette12. Got your PM to which I replied - but I got a message saying reply hadn't been sent. I'm having to rely on an internet cafe in Spain at the moment.

 

I changed the sensor in our daughter's Xsara which has a similar engine to the C5. I removed the air filter box for access and the sensor is plugged into the end of the cylinder head. There's a twin wired connector on the end of it. The sensor is held in by a hairpin-syle clip and there's an '0' ring under the sensor. You'll lose some water when its removed.

[coastline taxis]

Hi

to make the job as easy a possible try this

make sure the engine is cold

Remove the air filter housing and the long black hose that goes to the back of the engine.

If you have the top engine cover on (black square one with hdi written on it) go to the right hand side of the cover and roughly in the middle of it look down youl see loads of black water pipes and in the middle of then youl see your temp unit. Its green in colour and as john says has a 2 wire multi plug remove plug then remove sensor with 17 or 19 mm socket. just unscrew it out and screw new one in then reconect the multi plug. No special procedures or diagnostics needed.

 

If you havent got the black engine cover on the engine then just follow the top rediator hose and youl come to the same spot