Overheating when turning A/C on interstate on 1999 Ford Expedition

While driving on interstate engine starts to over heat if A\C is turned on
New thermostats 192'
New coolant
Radiator flushed

Asked by for the 1999 Ford Expedition
1 answer 2 comments
POSS FAN CLUTCH OR RADIATOR BLOCKAGE. YOU CAN TEST FAN CLUTCH TOURSELF,WITH ENG RUNNING WATCH FAN CLUTCH IT SHOULD STOP TURNING IN APPROX 3 TO 5 SECONDS IF NOT REPLACE
Thanks for the HELP
your welcome