K12 1.2 temperature sensor

[Rob1971]

Hi all. New to the club. I have a 2005 1.2se micra and have just changed the temperature sensor, after much searching I found very little information on its location so I thought I'd share it with you all.
The sensor is located on the rear of the engine on the right hand (battery) side. It has a grey multi wire connector and is a 19mm spanner to get off. It has a long thread which is tight to the end but there is very little water loss when changing. Easy 5 minute job. Have included a picture, the new temperature sensor is the one with the red block.

 

[Mika The Finn]

Easier to view, without clicking

 

[Animal2016]

Hi Rob1971,

This is great. I've also been looking at changing mine but wasn't sure where it was located as I couldn't find it mentioned anywhere.

Did you drain the system of coolant before removing it or did you just remove it with all the coolant in place ?

I'm interested to know as it would be good to be able to remove it without draining.

Thanks,

Chris

 

[Rob1971]

Hi Rob1971,

This is great. I've also been looking at changing mine but wasn't sure where it was located as I couldn't find it mentioned anywhere.

Did you drain the system of coolant before removing it or did you just remove it with all the coolant in place ?

I'm interested to know as it would be good to be able to remove it without draining.

Thanks,

Chris

Hi Chris. I didn't drain the system at all. I had a cloth under the switch to catch the small amount of loss, I took the old one off and put the new one in straight away. The water loss was so small that I didn't even need to top the system up again. Hope this helps. Thanks.

 

[Animal2016]

Hi Rob1971,

That's great. I thought I'd lose a lot of coolant so I haven't attempted it yet. If only a small amount is lost then I'll give it a go asap as it's also cheap to replace.

Out of interest, what made you decide to replace it?Was it poor idle?

I have a rough idle (especially when cold) and I've cleaned the throttle body which removed the flat spot and juddering at certain speeds but I've still got a poor idle which I think could be the coolant temp sensor.

Thanks,

Chris

 

[Rob1971]

Hi. Yes there was a slight poor idle problem and after reading a few posts decided to replace it and there hasn't been a problem since. Hope this helps.

Hi Rob1971,

That's great. I thought I'd lose a lot of coolant so I haven't attempted it yet. If only a small amount is lost then I'll give it a go asap as it's also cheap to replace.

Out of interest, what made you decide to replace it?Was it poor idle?

I have a rough idle (especially when cold) and I've cleaned the throttle body which removed the flat spot and juddering at certain speeds but I've still got a poor idle which I think could be the coolant temp sensor.

Thanks,

Chris

 

[Animal2016]

Hi Rob1971,

That's a great help. I'm definitely going to change mine as I've still got poor idle which is mainly when I start the car from cold. I'll report back if the replacement sorted the problem or not. Hopefully it will sort it.

Thanks,

Chris