Hello,
a quesion of what is the high- normal coolant temperature would be with AC on , and AC off in celcuis?

im using a liqui Moli 1:1 .


thanks in advance.

 

Normal operating range depending on the thermostat is 87 to 90 C.
The fan controller causes both fans to operate on high at 100 C.
The ECU operates both fans whenever the air conditioner is ON.

 

Here's a shot of torque log of some of mine while driving. Log is several pages long on a 150 mile drive w/changes in elevation from 4,200 - 5,900 - 4,500 feet pulling a load up and near coasting down (engine brake on cruise).

 

Fruitful information, thanks for
both of you.

 

Today's Reading as follows since i have scangauge:
AC on : coolant temperature was 101 Celcuis .
AC off : coolant temperature was around 97 C.

is it ok or overheating?
Note that weather temperature was around 30 C.

Thanks for help.

 

Not knowing what driving conditions were. Stop and go around town, or open road. It seems to be warmer than I would like but not to the point of overheating, You might want to flush the cooling system and change the thermostat. The existing thermostat may not be opening fully.
You might also want to try to wash out the area between the A/C condenser and radiator. You should be running around 90 C. You are a little warm but not dangerously hot.

 

Lab grade temperature measuring systems that cost under several hundred dollars are typically good to +/- 2 degrees C. You are looking at data from a sensor that costs maybe $2 to produce, has to work reasonably well no matter the date or location or brand of manufacture, with who knows what changes in the signal due to oxidation at the connections over time... Do not get hung up on a few degrees C.