The cooling system will maintain normal operating temperature under all driveable conditions.
THINGS TO LOOK FOR
It’s always a good idea to look at the thermostatic fan to understand how it operates. Because thermostatic fans are thermostatically controlled, they should switch on and off. A good thermostatic fan in a very good cooling system will switch on for between 20-40 seconds. If the fan switches on for longer than 60 seconds this might be a cooling system that is unable to cool down with the thermostatic fan. If the fan stays on for 5 seconds then this is an excellent cooling system as it never requires a lot of effort from the thermo fan.
This article is found in the Virtual mechanic CD Rom
You can download it for the price of a latte, but you will learn not to buy a lemon
By Darren Gow-Brown, Melbourne Australia ©2009