Temp gauge not working

[TommyD16]

Morning guys. Drove to work this morning and my temp gauge needle didn’t move. And 15 mins or so jumped to normal temp and was ok for half an hour then just before work it dropped off again.
it was working fine all weekend. Yesterday afternoon I removed most of the PCV system and fitted a catch can. I’m thinking I have knocked a plug off a senor. Does the temp gauge feed the gauge? I didn’t get an EML light or anything.
2004 LCR

 

[Alexis27]

Check the plug and sensor that go into the coolant bottle

 

[Nathan penney]

I had exactly this same issue when I drove mine on Friday. Not used it for a few weeks till then.
Took it out yesterday and it was fine.

 

[mty12345]

You won't get an engine light for temp gauge, yep fed from the coolant temp sensor

 

[TommyD16]

Drove home and the gauge didn’t move at all. One parked up had a play with the wires. Looks like a loose wire I might have knocked. Little wiggle on them and it started working again

 

[smutts]

You didn't have the universe's last working vw black temp sender did you?