I think it's most likely the condensor fan not working, especially if
the rad cools fine otherwise. The brushes in the motor wear out after
about 80-100K miles. If you take it apart there will be quite a bit of
carbon dust packed in there.

You can test the fans by turning the key to ON (engine remains off) and
then turn on the AC. The condensor fan should blow and in the right
direction and depending on coolant temperature, the radiator fan may
come on.

Be careful of moving fan blades in the engine compartment.


ib wrote:
> Also, if the fan has been replaced and is not the original, check that it is
> blowing in the right direction!!
>
> (i.e. pulling air in to the front of the car)