Overheating
Founding Member
Joined: 11-23-2007
Posts: 8,210
From: Texas
The ECM commands the fan on under the following conditions:
• Engine coolant temperature exceeds approximately 106°C (223°F).
• A/C refrigerant pressure exceeds 1302 kPa (189 psi).
• A/C is requested and vehicle speed is below 100 km/h (62 mph) with A/C pressure above 1413 kPa (205 psi).
• AF23-5 Transmission fluid temperature exceeds 130°C (266°F).
• VT25-E Transmission fluid temperature exceeds 140°C (284°F).
• When the engine coolant temperature exceeds 125°C (257°F) at key off, the fan will run for up to 108 seconds.
The ECM commands the fan off under the following conditions:
• Engine coolant temperature drops below approximately 125°C (257°F).
• Throttle position is greater than 95 percent.
• Vehicle speed exceeds 113 km/h (70 mph)
Thermostat should open at 190F.
• Engine coolant temperature exceeds approximately 106°C (223°F).
• A/C refrigerant pressure exceeds 1302 kPa (189 psi).
• A/C is requested and vehicle speed is below 100 km/h (62 mph) with A/C pressure above 1413 kPa (205 psi).
• AF23-5 Transmission fluid temperature exceeds 130°C (266°F).
• VT25-E Transmission fluid temperature exceeds 140°C (284°F).
• When the engine coolant temperature exceeds 125°C (257°F) at key off, the fan will run for up to 108 seconds.
The ECM commands the fan off under the following conditions:
• Engine coolant temperature drops below approximately 125°C (257°F).
• Throttle position is greater than 95 percent.
• Vehicle speed exceeds 113 km/h (70 mph)
Thermostat should open at 190F.
Senior Member
Joined: 12-21-2005
Posts: 1,010
From: Launch Coast Calif.
The ECM commands the fan on under the following conditions:
• Engine coolant temperature exceeds approximately 106°C (223°F).
• A/C refrigerant pressure exceeds 1302 kPa (189 psi).
• A/C is requested and vehicle speed is below 100 km/h (62 mph) with A/C pressure above 1413 kPa (205 psi).
• AF23-5 Transmission fluid temperature exceeds 130°C (266°F).
• VT25-E Transmission fluid temperature exceeds 140°C (284°F).
• When the engine coolant temperature exceeds 125°C (257°F) at key off, the fan will run for up to 108 seconds.
The ECM commands the fan off under the following conditions:
• Engine coolant temperature drops below approximately 125°C (257°F).
• Throttle position is greater than 95 percent.
• Vehicle speed exceeds 113 km/h (70 mph)
Thermostat should open at 190F.
• Engine coolant temperature exceeds approximately 106°C (223°F).
• A/C refrigerant pressure exceeds 1302 kPa (189 psi).
• A/C is requested and vehicle speed is below 100 km/h (62 mph) with A/C pressure above 1413 kPa (205 psi).
• AF23-5 Transmission fluid temperature exceeds 130°C (266°F).
• VT25-E Transmission fluid temperature exceeds 140°C (284°F).
• When the engine coolant temperature exceeds 125°C (257°F) at key off, the fan will run for up to 108 seconds.
The ECM commands the fan off under the following conditions:
• Engine coolant temperature drops below approximately 125°C (257°F).
• Throttle position is greater than 95 percent.
• Vehicle speed exceeds 113 km/h (70 mph)
Thermostat should open at 190F.
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