fuse 28 is for the cooling fan in SHO model cars only. If your car isn't an SHO, the position
should remain empty..... There's a lot that can cause engine and AC cooling fans to work
improperly. You should have the system checked by a pro.... You have two fans: the
cooling fan for the radiator and the fan that cools the AC condenser. If it's the condenser
fan, the Ac will run and stop cyclically as the unit overheats. If it's the radiator fan, there are
several possibilities for what's actually wrong. First, run the AC and see if the radiator fan
runs: it's supposed to run with the AC by default. If it doesn't run, you likely have a low
level of refrigerant in the system or a faulty switch or a sensor, or a bad fan motor, fuse,
relay, or a wiring problem. If the fan runs, you probably have a defective engine coolant
temperature sensor or temperature switch.
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