I have a Corsa C 1.7 dti and I have a problem with it, I visited many garages to fix this problem but all of them suggested me to change the thermostat. I followed their advice, tried 4 thermostats by selecting best brands but still no success.
The engine temperature is always low (ZERO), I searched too much into Google/forums and I saw that if engine temperature stays always low it will damage your engine because now is winter and here we have minus temperatures.
I have changed temperature sensor just to make sure if sensor is working and showing me right temperature, but still zero.
If I drive it very hard core and in up roads with 5 persons and if I keep it going hard the temperature will go up to 80, but when I drive it normally the temperature will go to zero very fast.
Also it's not heating inside. I changed the heater but it's still the same...
any suggestion what to do?
Thanks Best regards.