Red Box Rebel
Registered
Never had an overheating problem with the '97 Mark VIII until now. The system has been drained and a new thermostat has been installed. All new hoses and a good 50/50 mix of new coolant and clean water has been installed. All air has been purged from the system and the heater core has been checked for any blockages and there were none.
The radiator has not been be checked for blockages, but appears to be free from obstructions and junk. The flow through the system appears to be normal, but I am not completely sure.
The engine runs at normal operating temps for 15 to 20 minutes and then starts to overheat after being driven over 35 MPH. The cooling fan is coming on and is blowing high.
I do have a broken blend door actuator, but I do not see how that would cause overheating in January with temps in 30s.
Any suggestions would be most welcome.
Thank you and Happy New year.
The radiator has not been be checked for blockages, but appears to be free from obstructions and junk. The flow through the system appears to be normal, but I am not completely sure.
The engine runs at normal operating temps for 15 to 20 minutes and then starts to overheat after being driven over 35 MPH. The cooling fan is coming on and is blowing high.
I do have a broken blend door actuator, but I do not see how that would cause overheating in January with temps in 30s.
Any suggestions would be most welcome.
Thank you and Happy New year.