Quick one.. Running cold

[goafer]

I just wanted to check with the ones in the know.. (03) 1.8 petrol
I presume from my little knowledge that hopefully its just a thermostat but here we go... The temp gauge will not rise ever, unless sat traffic stationary. last week I did 115 mile journey with no stopping & it never mover onceas per usaual! If I idle stationary for 10 mins it will rise steadily untill what I pressume is the radiator fan cuts in & lowers it to an mid way temp.
Easy fix, or snuffed???? Thanks Ian

[Grumpy1954]

If it was thermostat, I'd expect it to stay cold all the time, not rise at a standstill, though it could be sticking. Cheapest option to fix, I'd take it out and check it opens and closes.. I had a Supra with those symptoms once, turned out to be water pump, the impeller had rotted/fallen off the inside.

[tony-1977]

Sure it's the thermostat. If thermo is stuck open (or missing), temp WILL rise when stationary as there is no cool air flow into the radiator to cool it, then when you start moving, it cools again... Happened on my Astra, quick fix. :-)

[Das]

How2 available to do this, £10 for a new stat off ebay, £5 for some instant gasket seal and £15 for 5lt of OAT Antifreeze from a VX dealer. Or stick it in to a dealer and don't expect much change off £150.

http://www.vectra-c.com/forum/showthread.php?t=122762

http://cgi.ebay.co.uk/VECTRA-C-1-6-1...ht_3819wt_1124

http://cgi.ebay.co.uk/GRANVILLE-INST...4#ht_500wt_949

[goafer]

Thanks for response shall try the stat on pay day... Fingures crossed.