I have a 1988 Jaguar XJ40 with digi dash. If I go up a steep hill with the air con on and the external electric fan running the temperature will go up to 100 degrees Celsius. In normal conditions it runs at about 90 degrees Celcius but on hot days in South Australia it may go up to 95 degrees. Radiator, water pump thermostat all replaced and good. My question is 100 c to 105 c too hot for these engines or is this normal operating temperature.
Thanks for reading