Started to over heat for no apparent reason gauge up to red mark but raddiater not boiling over heater still working water pump not long new changed raddiater from another terrano i had but made no differance gauge still went to red what is the problem can you help
When all else fails to fix the problem, check the gauge and the thermocouple.
SOURCE: engine is over heating and blowing air into coolant resivor and boiling coolant
1. Do you have a cooling fan system for your car, if you have , please check it, sometimes due to the wire overheated short problem and fan doesn’t work and cause the engine over heat.
2. If the head gasket leaking, you can check you oil steak see if there is white steam oil bubbling ,if the oil has steam and the radiator has oil mixed with coolant , that means the head gasket leaking.
SOURCE: 97 f 150 runs hot for minutes then runs ok
It could be a faulty thermostat. Did it do the same thing before u replaced the t-stat? It sounds like it's sticking closed, then all of a sudden it opens, coolant flows correctly. I'd consider changing it again. Check to make sure parts store is giving u the correct temperature thermostat also. Maybe it's too high for your Ford, delaying the opening.
SOURCE: Heater not working
you more than likely have an air lock in the cooling system you need to bleed the system of air, has the coolant just been replaced?
does the engine fan come on to stop the vehicle overheating?
SOURCE: Terrano overheating
this problem can be caused caused by the following 1 radiator blocked internaly and needs servicing 2 thermostat jammed closed 3 radiator cap u/s the radiator may look fine but blocked @ the bottom where you cant see it.
good luck Lindz
SOURCE: 2002 Land Rover ~ Freelander - No heat coming from the heater
Look for two water lines about 1 in in diameter running back toward the condensor unit in the firewall. On one of those lines will be a control. It is sometimes vacum controlled. When they are vacum conrolled they have a tendency to get stuck or you may have lost vacum to the unit. You can use a vacum tester and short piece of hose to test this to see if you have lost vacum or if it is stuck closed. Connect the test hose to the control on teh hose and apply vacum to the unit. If the valve opens you will get heat in the vehicle. If it does not open then it is stuck in the closed position and will need to be replaced in most cases.
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