UK Auto Repair Questions?
You state you are getting power to the fan however is the fan switched on the Live side or the Earth? Have you checked if the the fan has an earth to it?
The cooling fan would only work usually if the vehicle is left running while stationary or in very slow moving traffic. at other times it wouldn't work other than when you have your air conditioning on!
If the Live and Earth are present at the fan then it could possibly be a faulty fan. The best way to tell when the fan should work is to run the engine with a diagnostic scanner attached. in the live data you will see the engine temp and there should also be data for when the fan is switched on.
Hope this helps.
It certainly sounds like the fan motor could be at fault. I take it the fan is not even turning when the AC is on? you could disconnect the fan connector and power the unit straight from the battery. You would need some fairly thick cable! If it doesn't turn then you know for sure it is the fan motor that is at fault!
No problem at all
What engine size is yours / registration. I will see if I can find a diagram for it.
I may have a partial diagram for your system.
The fan won't stay on constantly for engine cooling. It will come on for a minute or two and when it cools down will go off.
Even if the engine is a normal operating temperature and you are using the A/C the fan will cycle in and out.
What did you do to get the fan working?
That would usually blow because of a faulty fan motor.
If you have the facility to look at Engine Live Data you will see that the Engine Temperature will reach approx 118 degrees C and then the fan will cut in and run until it lowers the temperature by approx 10 degrees C. It will then stop until the temperature rises to 118 degrees C and then cut in again.
Was it a 30 amp fuse or a 40 amp fuse you have replaced?
In which case can I suggest that you check Fuse 45 which should be a 40amp fuse as this may have blown as well!
Can I also check have you got a Manual Temp controlon your heater panel or automatic? I will copy the diagram for you.
Probably no fault at all now.
Don't forget to check the other fuse.
That is fine they usually do if its hot or for self test.
The fuse you replaced will be for the low speed fan. Check the 40 amp fuse as that is your high speed fan.
i have attached a diagram for your reference.
The relay you see on the cowling is for the speed adjustment and is fed by the 30amp fuse you have changed.
Sorry not relay its a resistor on the cowling!
I wouldn't think there is any fault now the fan is working. It was probably just the fan motor faulty which had blown the fuse. I would think it will be fine now.
If the engine is overheating then either the Temperature Gauge will have risen or for those that don't have a Temperature Gauge there should be a Blue and a Red Thermometer Warning Light. obviously Blue is Cold and should extinguish when the vehicle has reached operating temperature. The Red Symbol will illuminate if the engine is overheating.
As long as this isn't illuminated then all is fine.