The best way to test the fan for real world operation is to go for a drive to get the engine up to temp, then leave it idling for about 20 minutes. Make sure the air con is off.
If you have an OBD2 reader the fan should come on at 103' and speed up at 110', it should go off at 98'.
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Former custodian of the legend that was FE54 - RIP
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