== == Cooling fans are designed to start at 235 degrees
Thermostat is stuck.. Is the cooling fans coming on at 232 degrees? Is the radiator sludged up?
Need to know what to hot is. A typical cooling system will run at 200 degrees F (+ or - 5 degrees). This is normal.
Is cooling fan working? Radiator clogged? Air flow through radiator resrticted? Temp gauge accurate - check with manual?
Test the temperature at the radiator--cooling fan is designed to come on when temperature is 235 degrees
Check the temperature at the radiator when hot Cooling fan is designed to come on only when:A/C Compressor is on (either during cooling or defrosting) orwhen coolant temperature exceeds 235 degrees Fahrenheit
Electric cooling fan? Fan placed behind radiator to aid in engine cooling activated when engine coolant temperature exceeds 235 degrees F or when A/C or defroster is engaged
For the Peugeot 406 Diesel from 1993, the cooling fans typically activate at around 95 degrees Celsius (203 degrees Fahrenheit). This temperature can vary slightly depending on the specific engine variant and conditions, but it generally falls within this range. It's essential to consult the vehicle's service manual for precise specifications related to your particular model.
An pressurized automotive cooling system containing a 50/50 coolant/water mixture will boil at 236 degrees F.
The engine temperature must reach 232-235 degrees in order for the cooling fans to come on. They will shut off at about 195-200 degrees. Also when the air conditioner is on the cooling fans automatically come on regardless of temperature.
The radiator alone, about 4 qts. The complete cooling system, about 12 qts. A mixture of 50% water and 50% antifreeze should protect the engine to minus 34 degrees F.
Most cooling fans come on low speed around 150 to 180 degrees Fahrenheit. Unless, your running the air conditioner or the defroster. Turning on your air will also activate the cooling fan.
Cooling by 20 degrees would result in a temperature of -20 degrees. Cooling by 70 degrees would result in a temperature of -70 degrees.