JTS Temp needle fluctuations
So noticed this week on my GT 2.0 JTS for the first time ever that my temp needle moves between 85 and 90 periodically on a m/w run when warm.
From cold, staight upto just below temp 90 in the normal manner
Then the needle holds at 90 for about 10 secs, it moves down to 85 over around 5 secs, holds there for a while, then back upto 90 in 5 secs again. And so it continues
If the car is idle in traffic the needle routes itself just below 90 and stays there
So what is going on ? Can there be any system control that runs such a periodic action. And why only on m/w driving
Should I be worried ? before this week I would say it always went up just below 90 and stayed there until switch of, so something has changed, maybe just the cold weather ?
There's nothing in the dark that isn't there in the light ..... except fear