Vectra temp gauge not moving much...

NorthstaNder · 15 Dec 2014 at 21:49

Hi,

Took my new Vectra on it's first long run at the weekend since I've owned it. First of all, it was great (compared to my old Corolla!). So much more comfortable and effortless cruising on the motorway. 70mph and wasn't even do 3000rpm.

Anyway, I noticed the temp gauge didn't move until I slowed for traffic or a junction/roundabout. Then it would climb to 90, and once I was moving again it dropped back down.

Output from the heater seemed fine and mpg was 38 mpg over the 200 mile trip with a bit of stop/start and the start and end of the journey.

If it helps it's a Vectra C facelift, 57 plate 1.8i vvt (petrol)

Janesy B · 15 Dec 2014 at 22:02

It shouldn't move at all once up to temp?

NorthstaNder · 15 Dec 2014 at 22:05

Janesy B said:
It shouldn't move at all once up to temp?

Well, that's my point. It stayed at the lowest point on the gauge until I slowed for traffic etc. Then it would climb to 90, and then drop again once I got moving.

[TW]Fox · 15 Dec 2014 at 22:07

Thermostat is screwed.

Terminal_Boy · 15 Dec 2014 at 22:17

What ^ he said.

NorthstaNder · 15 Dec 2014 at 22:27

I wondered if that might be the case. Will get it sorted under the warranty.

Thanks chaps.

MooMoo444 · 16 Dec 2014 at 15:05

Sure it will have a warranty being a 57 plate? If it's an aftermarket warranty, they're usually extremely fussy on what they cover and what they don't, so make sure you are.

Jez · 16 Dec 2014 at 15:19

My '55 Vectra 1.8i did exactly the same thing.

One 20 quid thermostat later it was fine, its very easy to change, right on the front of the engine (if the warranty is no good). You'll find the heater much stronger too as a bonus.