Hello. I have a Skoda Fabia 1.2 HTP 2003.

It have a problem to reach working temperature when it´s getting a bit cold outside.
From about 0 to -5 degrees the gauge stays like this:

 

I have changed the thermostat, It got a bit better.
If a turn off the heater fan the temperature will rise to normal. 
When I then turn on the fan, the temperature will fall down again.

 

 

Only when I drive about 80-90Km/h the car reach normal temperature, with the fan on full power.

I tried standing still, and rev the engine until normal temperature, then I turned on the fan, full power.

The temperature gauge almost decreased until the bottom, with bad heat blowing from the vents.


The only thing I can sort out is that the engine is not producing enough heat when not driving above 80-90km/h. It´s to efficent.

And when I turn the fan on full power, I´m draning the heating element to heavly and the engine is not producing that kind of heat when I dont put that kind of load on it.

Any suggestions?

Edited 4 February, 20188 yr by curious1

Still seems like the thermostat to me. Did you get a genuine one?

Yes its a genuine one.