Toyota Repair: overheating, toyota camry v6, cooling fan system

Question
my 1992 toyota camry v6 3.0l engine,auto tran, overheats when running idle with the A/C on.What is my problem.I replaced radiator and thermostat.It does not overheat at any other time except for when it is running idle with A/C on PLEASE HELP.

Answer
This year engine uses an electronically controlled hydraulic cooling fan system, the cooling fan is controlled by hydraulic pressure from the power steering pump, when the a/c is on or the engine is at operating temperature at idle the fan should spin at a high rate of speed, I have a feeling that this is not happening and the fan is turning too slow.
This may be caused by a disconnected connector for the solenoid on top of the power steering pump that controls the fan.
Has anyone recently worked on the engine that may have caused the connector to be removed and not reinstalled, have the valve covers been removed lately?
In any case make sure the connector for the solenoid on the power steering pump is connected, otherwise the fan will run at slow speed all the time and won't cool the system.