temp gauge on agu

[northeast_gti-t]

as has been said replace your thermostat and also maybe worth replacing the coolant temp sender (cts) at the same time as its cheap enough and is literally a 5min job if that 

Are these cheap from the dealer?..mines an AGU an has just started doin the same thing,keeps droppin to halfway between cold and 90 deg when i go on the expressway.

cheers dave

is worth changing both then really yes cheap enough from vw but give tps a try iirc i got a stat,o'ring,coolant temp sensor and clip for under £30 obviously some G12++ coolant on top around 3 litres

[Purely VAG]

2 pin CTS from VW is £24
4 Pin CTS £32

Arent cheap, TPS must give good discount on that.

[northeast_gti-t]

2 pin CTS from VW is £24
4 Pin CTS £32

Arent cheap, TPS must give good discount on that.

they do compared with vw 

[aaran]

stats under £3 to me and i wont say how much the temp sensor is  will see what brand is in the box when i get back to work and have a look.

red longlife antifreeze for vw right?

[G60GTI16V]

NO its G12 even says it on the header tank 
i get free bottles of this when im due for a change from my lovely vag dealer 

[Purely VAG]

red longlife antifreeze for vw right?

Correct.

Ordered my stat today, comes tomorrow.

[D4VEY01]

Went dealers and got stat,sensor and o rings.Sensor was a 5 min fit..Stat about an hour coolant included in that..Small 5mm allen key and 5mm ball end allen key essential no dramas.