Coolant Level sensor Leak

I have an issue with my coolant level sensor thats starting to bug me cf_emoticons__BangHead:The coolant is being pushed through the pins of the sensor itself and is collecting in the top of the plug causing the light to flash constantly on my dash.

I have changed it with one from euro car parts and a febi one but it just continues to fill up. Vw no longer stock them either.

is it a simple case of poor aftermarket sensors or is there something more serious im missing?

Any suggestions/experience with this?

Thanks

What colour expansion tank cap is fitted? Blue or black? 

Its a blue cap.

The blue cap is a the right on, I've heared of people having trouble with the black caps.
Sorry can't be much more help. 

I have had this, so check the coolant level isn't too high.
As if over full as the coolant warms up it expands and will force it's way through the weakest point first, instead of blowing from the cap.

Could be a poorly made sensor too.

Yeah the level seems fine.

I also just changed the coolant and flushed the system hoping this may help but sadly not.

I have bought yet another sensor so ill see if this works.

If anyone has an original working sensor that they know works for sale i would be interested.

Thanks 

worst case fit a 90spec mk2 or mk3 tank, much better design. find a mk2 90spec and swipe the coolant tank bracket off it for an easy life, or cut one off a mk3 golf (or other similar 90+ vw/seat)

edit: oh and you need the plug, chop it off and splice to your loom