Hi all,

I have a Vectra C 2007 1.9 150 sri. Problem I have is that I can be going down the motorway with the temp guage sat at 85, then it will just drop to 80, then go back up again. Odd time its gone as low as 75 then got back up again. It had a new thermostat in Jan 10 (12k miles ago roughly)(including new housing) .. About 3 week ago it had a new cambelt kit, water pump fitted, but im sure it was spot on after this. I do around 250 miles aweek for work only only noticed it the last week.

Any help would be great.

Cheers
Si