Kühlwassertemperatur auf 94°C, grade jetzt wo es kalt ist! | Posts 16+

Update from this morning:
Nothing unusual happened again.
Stepper motor hiccup ?

Update from this morning:
Nothing unusual happened again.
Stepper motor hiccup ?

Hello Roger,
Yesterday was Ash Wednesday!
Regards,
Günther

PS: I hope nothing else comes after this.

@ Roger

Even with a stethoscope placed near the engine compartment, there were no unusual sounds during idle. Environmental conditions this morning were -2.5 degrees Celsius; the car was parked in a carport. Mileage: 48748 km.

Roger wrote:

Stepper motor hiccup:roll: ?

It's quite possible, especially since the display was probably fixed at 100, similar to how it's usually fixed at 90 (plateau).

dieselmartin wrote:

The G2 (which, at the time, did not yet have the popular plateau function on the temperature display) always got hotter in the winter than in the summer.

Hi Martin,

In the context of my plans for a smaller cooler in the heat pump system, I would like to know approximately what the maximum difference in display readings would be between winter and summer (assuming an outdoor temperature difference of about 40 K?), given roughly the same motor load.

Background:
With the radiator partially covered on the ASZ engine, my temperature readings reach a maximum of 99°C at full throttle up to 200 km/h, with an outside temperature of 12°C. Without the radiator cover, the temperature quickly rises to 99.9°C.

If the external temperature fluctuations at your location (and consequently, in the return flow of the cooling system) have shifted the displayed value by, for example, 5K, I can roughly estimate that a 1K difference in the log corresponds to approximately 8K difference in the cooling system's return flow – caused by the partial covering of the cooler.

When I try to measure the return flow using my own equipment, I fear that the results may not be very meaningful (due to heat loss between the radiator and the sensor).

Under normal driving conditions, my car's temperature gauge shows roughly the same values, between 88 and 98 degrees Celsius, both in summer and winter.

I don't think it's unusual for a motor to [something] under load.
The temperature on highways is generally higher than in urban traffic.

'Last summer, the temperature gauge on my car reached 114 degrees Celsius when it was under full load.'
(Tuning), and the friendly mechanic from the workshop told me that...
The temperature is no longer within the specified range, but it is acceptable for the engine block.
or, which the ZKD considers acceptable.

Best regards, Peter.