Coolant Temp Sensor

[HPsauce]

Just an update for this thread with a little tip.
I did this again today, actually reversing what I did in August last year.
The replacement sensor failed, even throwing an error shown by VCDS, and was causing severe starting problems. So I put the old one back.

The problem with the old one was that it showed a low temperature on the dash, but otherwise caused no problems.
Now I need to get a fully-working one and go through this process yet again.

I did this alone, without the help of the "small-fingered one" and getting that clip back in took ages! I managed by manipulating it with one hand and pushing it in with a long screwdriver held in the other.

The tip? Tie a long piece of thin twine around the "loop" bit of the clip and add a bit of tape to stop it slipping around. Just tape it on somewhere or hold the end in your mouth.
Then, when your cramped hands lose grip, it won't disappear forever behind the engine.