Where does this connector go

FishHo

So we but the Astra back together but its not starting and the fan is coming on immediately. Its throwing a coolant sensor error as well. I suspect the coolant error is something to do with this 'spare' plug but for the life of us we cant figure where it goes. Anybody got any ideas.

KevinH

Looks like this is the connector for the CTS (coolant temperature sensor) which is located at the rear right hand side of the engine as you look from the front. The CTS is a brass sensor which is screwed into the body of the thermostat housing - the connector should just clip on. 🙂

FishHo

I don't think that's it. The cable is too short and the wrong shape. Ive got the cable for the CTS coming from round the front and plugged in as per this pic (not my picture but same engine)