temp gauge fault help/ideas ?

[will gti]

 hi, my temp gauge only seems to be going half way to 90? i have done a search about the sensors etc.....just didnt wanna go replacing random bits, thought it best to ask you guys  on here first. Oh and btw its only been since we started getting cold weather and i DO have anti freeze in. 

thanks

[Rhyso]

does it ever get to 90?

two main suspects are temp sender or the thermostat

you can use VAGCOM to log the temp sensor or identify a fault with that.  If that comes back all clear then its your thermostat

[gumie30]

Mine did it last week changed the thermostat works fine now sits bang on 90 all the time..

[will gti]

it did wen it wasnt this cold but now it never does cheers for the help would these cause bad mpg coz thas wa i been gettin awell

[Rhyso]

it did wen it wasnt this cold but now it never does cheers for the help would these cause bad mpg coz thas wa i been gettin awell

Yep as the car thinks its cold so chucks in more fuel to compensate

[will gti]

sweet i thought it couldv been the maf again, how much do thermostats cost m8 any idea ? 

[gumie30]

mine was about a tenner i think, not too bad and a couple of hours to fit it..

[Rhyso]

sweet i thought it couldv been the maf again, how much do thermostats cost m8 any idea ? 

Genuine one is about £25 or so 

[tech1889]

Is this the first time this has been covered.. im sure there was a thread about this last week.. and everyweek before that lol 

[mr 1.8t dubbster]

  check this out! hope it helps!! http://www.golfgtiforum.co.uk/index.php?topic=101783.0