Engine temperatue

[dhwigston]

My engine temp gauge would not budge so I replaced my thermostat and still it doesn't move, I've done 100 miles on it and still sits there quite happily. What else is there I can check?

[macdad]

My engine temp gauge would not budge so I replaced my thermostat and still it doesn't move, I've done 100 miles on it and still sits there quite happily. What else is there I can check?

Nowt, its the extreme temps mate,coupled with the natural characteristics of a diesel Vec c.

[ChrisBilly]

Did you replace the complete housing including temp sensor and stat or just the stat? If the latter then maybe the temp sensor is at fault.

[whiskyno7]

mine doesn't move when on the move it sit's at 0. but when in taffic or sitting still for a long time it slowly creeps up to the half way marker had the car two years now the cooling fan kick's in about just over the half way

[husky]

was -17.5 yesterday morning but after 10 minutes of running my temp gauge starts moving and then sits around the 85 mark , stat was changed on Saturday as mine never moved before that

[mozzer99]

With recent discussions there are two areas of concern here;-
The first is that thermostats (at least on the CDTI 150) do stick open or at least open too quickly.
The later type is a modified or updated thermostat that opens slower and therefore warms up quicker.
The second point (that is disputed by some) is that the diesel engine uses so little fuel at idle or very slow speeds that the heater tries to pull more heat out than the engine creates. In these current minus temps you can be ticking over and with the heater on full see the temp gauge dropping down to the min mark.

It is not right IMHO that you can be running at over 20 mph for any length of time and the gauge not rise - what ever you are doing with the heater.

If you are travelling at motorway speeds (even this time of year) and the gauge doesn't move to 85c and stay there - change the thermostat.

[The Rocketeer]

if you go into the hidden menu using the settings button you'll be able to find out what the temp stick is actually doing before it even registers on the gauge.

I.e. the temp gauge only kicks in at 70 degrees or higher, yet the hidden menu will tell you digitally.

From this and what the others are telling you you'll probably be able to make an informed judgement.

Regards

Paul

[wcr]

I've said this before, the problem is the cooling rad on Vec C's is far too big and cools far too much in the winter.

An engine running too cold is just as bad as an engine running too hot.

For a road car the solution is simple. Cut a piece of cardboard the same height as the coolant rad, and half the width. Slot it between the Air-Con rad and (in front) of the cooling rad. Make sure it can easily be removed.

Keep a very close eye on your temp gauge. If it gets hot, cut more off the cardboard, too cold add a bigger piece of cardboard etc etc.

What your doing is restricting the amount of ice cold air cooling the rad/engine, and bringing the engine back to optimum running temps.