Got a 2001 bmw 316 e46 just put a new expanshon tank on an coolant and its over heating the fan doesn't come on and it boils the coolant and steam comes from under bonnet ?? Any idea where to start ( ignore video I uploaded wrong vid)
If your losing coolant water pump may be leaking, not enough coolant will make it overheat. If not that, thermostat may be bad stuck open or shut. Hope this helps
Check the fan relay
SOURCE: I have 1996 mitsubishi pajero
are you sure you had installed the correct gasket? did you compare it with the old gasket that you took off? I suspect that you got the wrong gasket and blocked up the holes between cylinder head and engine block thats why the coolant are not circulating thus creating an excessive heat
SOURCE: bonnet lever under dash not working cant open bonnet
My bonnet lever has snapped and i need to replace my battery to start my car... any idea how i can get into the engine?
SOURCE: I have a 2001 V70XC.
Welcome to Fixya
Non functioning radiator fan will surely makes your car to overheat. You may try to test the fan first. Use extra wires and connect the wires directly to the battery terminal and see if the fan will work. If the fan will not work when it is directly connected to the battery terminal. The problem is the fan already and you need to replace it.
If the wan will work, then you need to check the Fuse and look for blown radiator fan fuse then replace it.
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