[Vwdiesel] temp gage

[mikitka]

I was wondering why my temp gage reads slightly higher when driving at night
with the lights on. During the hot summer days it runs just barely touching
the center line on the gage but when I drive into work in the morning or
coming home in the dark the needle runs straight up on the center line.
This morning really got me because it was our coldest this year at 45 F/ 7.2
C and it ran the same slightly higher in temp and I even was running the
heater inside the car. Could it be due to the difference in the electrical
voltage due to the draw of the headlights being on putting more of a load on
the alternator? Or even the extra heat in the dash from the dash lights????
Just seems odd to have two different readings.

 

Oh and since I only have just under 6k on the new rings, it fired right up
this morning, no problems.

Nick