Overheating Problems Please help!
I have recently got a jeep liberty 3.7l v6. The car runs fine and heats up as normal. The temp gauge stays at mid temperature until I hit speeds of 40+ mph. It then climbs to approx 3 quarters and higher the faster I go.
I pulled over and the coolant fluid was bubbling over spilling loads of coolant out of the overflow and all over the back of the engine bay.
Is there one fan I should check or two? is there a way of determining whether perhaps the fan is not working? The pipes at the top of the fan in front of the radiator do become hot after running for a while which I have been led to believe means the temp valve is not stuck shut?
I know the fan relay units are not the best design but not 100% its the fan.
Any ideas or tests I can do with the fan, rad, coolant system or relay would be greatly appreciated. I am no mechanic but would rather try to diagnose the problem and pay for it to be fixed rather than continue to pay to diagnose faults at a garage.