[VTS_16v_Boy]

Whack a new Thermostate in just to be on the safe side not expensive about £12 of your english pounds and you can fit it yourself dead easy. Flush out the block and rad get some new anti freeze/summer coolant in there and take it from there.

Mite be worth give the rad a quick look over as they are prone to corsion. If your still running warm 3/4 or pretty much anywhere above 1/2 then get a dye test done this will show any exhaust gases in your coolant system ie possable Head Gasket.

I had loads of troble with mine too, one garage said head gasket done dye test somewhere else turned out to be thermo stuck closed £12 is better than £300