The needle has been hitting 100° and beyond during the last trips
So last weekend we took the Cube out for a test, carrying along an IR gun we borrowed.
Of course the temp was pretty normal all time
we tried the IR gun and it pretty matches the gauge, so at least I know the values are true (give or take a couple of degrees probably).
On the way back, I stopped by the mechanic and we changed the thermostat with a brand new, original one (by the way, 88° type).
I took the motorway and the temp stayed pretty much on 95° for 2/3 of the trip,
and then suddenly, while cruising quietly at 85 Km/h, went to 100° and beyond.
Then I pulled one side, bonnet open, and I let it cool off a little.
On the last leg of the trip (+40 Km) it stuck to 100° and basically never went below
Tonight (it's 2AM right now) I went out with some mates, I left the parking lot (almost cold engine) and saw a girl home, I slightly throttled a gear on a hill and the temp did again hit the 100°. On the way back (fresh and cold outside) I went really slow to help it cool off, and instead it passed 100° again. Again I pulled one side and opened the bonnet for a few mins. Then went home with the needle firmly stuck on 100°
while driving at 50 Km/h!
I tried different speeds to notice any change, but no change at all.
One thing I noticed though, is that if I turn the heater on, all the way to the red, the needle/temp tends to go higher
shouldn't it be the other way? Pushing hot water to circulate shouldn't dissipate heat faster??
I found a radiator I can borrow for a test.
We'll make the swap one of the following weekends and see if anything changes.
If it doesn't, I don't know what to think...