The reason your fans are coming on is the flow is in effect HALTED by the fitment of your GRS.
To cool a GRS equipped Escort the fan (one should do) or fans have to be
mounted directly to the radiator to draw the through the cooling medium.
An 82 degree thermostat will also help slightly.Alloy rads,more fans, water
wetter without moving the fan/s to the correct location will make (technical term) BUGGER ALL DIFFERENCE.

P.S.
A quote above was,-
'Only defective vehicles will end up with the fans coming on while driving.'
Which must mean my Brand New Mercedes (when started with the a/c
running) must be 'defective'........
Which kiddies goes to show the danger of making sweeping statements!