Touareg: 2009 V6 TDI
Join Date: Sep 2016
Second Vehicle: Still looking
Thanked 1 Time in 1 Post
2009 V6 TDI engine does not warm up
I have 2009 V6 TDI Touareg and since last November I've noticed that hardly ever my engine coolant warms up to normal 90c temperature. Year back I had no issues with temperature, once it warmed up to 90c, it stayded there. Few times it has done so, that suddenly coolant temperature has raised to 90c and stayed there but most of the time it is around 60-70c when ambient temperature is around 15c. During winter time, auxilary heater (Webasto) is almost always on.
I had thermostat replaced last January but that did not help. Thermostats are such a simple devices, that they should not get broken easily or malfunction.
For example in the picture below, you can see that oil temperature is 80c and coolant is 60c. We've been driving for almost 2h when I took the picture. In the graph picture, I've logged temperatures from ODB using Torque and you can see that coolant is around 60-70c.
Do you guys have any idea what could be wrong? Is there anything I could check myself?