location of coolant temp sensor

[benjaminamoo]

anyone who can explain this to me and it actually make sense? googled it but none of the pictures actualy show where it is or descriptions are shit

my cars a 316 facelift, cheers lads

[daimlerman]

Assuming that is the later M40 engine,have a peer under the inlet manifold on the side of the head,think that both the blue ECU temp sensor is there,alongside the brown temp gauge one.

[Billwill]

Yes they are both under the intake manifold.....you can get to them with a little bit of bother using a deep socket without taking off the manifold if you are lucky. First pull off the connectors and test them with a meter or ideally test them with a meter all the way back at the ECU plug with the engine cold then hot.