Temperature indication - Astra diesel

I have just purchased an Astra 2.0 diesel EcoTech. On a journey of 8
miles from cold start, the temperature gauge does not move, although
the heater is quite hot. Is this normal, or has the thermostat failed?

 

well i wouldn't think it be the thermostat if you have a hot heater matrix

i'd guess for a faulty temp gauge sender unit or the gauge is stuffed.
check the wires going to the sensor first.
might just have pulled off

mike

 

Thanks for the response mike. When i turn the heater down, the gauge
then rises to about 80 deg, so its workin. Just wondered if they were
all slow to rise?

 

They take ages to show on the gauge - if it is getting hot and the gauge
works when you have done more than 8 miles it will be fine

 

Normal operation over a short journey.
Dave

 

ok well i think the other gents have answered that one!

mike

 

Thanks guys

 

Mine petrol version did exactly that as soon as the very cold weather
started - stst replaced, problem gone.

If purch from a dealer with a warranty, you know what to do!

 

My new Zafira diesel does the same thing.
It comes up to temperature later in the journey.
I think this is normal behaviour.

You could give your dealer a ring though if you're concerned.

 

Hi,
My Astra 1.7TD was doing exactly the same thing until I changed the
Thermostat (A very quick and easy job) and now its warming up after a couple
of miles and regulating its temperature quite normally.
A new Thermostat will only cost about £12 from a Vx dealer, just make sure
you get a new seal at the same time.

Ben