Temperature Gauge - Engine/coolant

[Kecels]

Help.

My Engine/Coolant Temperature Gauge on my '08 C4 vtr+ has stopped working. It occasionally registers by climbing up the digital display and then stops and disappears again.

Can anyone tell me where to locate the sensor below the bonnet?

Is there two?

I've replaced one but o no benefit! 

All help much appreciated.

 

[paul.h]

Welcome to the forum.

 

Which engine is it ? Haynes says the coolant temp sensor is fitted to the coolant housing on the left hand end of the cylinder head for the engines it covers. It does not mention a second sensor. If you have a code reader that does live data you could see what temp the sensor is giving and this may help indicate if it is a sensor or maybe a wiring problem or a display problem. Are you having any engine running problems since this uses the temp sensor ?

 

There is a Haynes manual now for the C4 which you may find useful. It covers petrol 1.4 and 1.6 litre, diesel 1.6 and 2.0 litre but not 1.6 litre THP turbo, 2.0 petrol, 2.0 SOHC diesel or the Picasso or the C4 from 2011.