I have a 1993 single turbo rx7 with 2 row fmic, fluidyne radiator, and custom vacuum air vent thing that fits under the car and directs air into the radiator, fan on the passenger side works but the fan motor is slowly going. basically on a cold day my car will get up to 102 C with no hesitation...i just put in a new thermostat..and yet she still heats up...we remounted the FMIC and still getting too much heat....what should i do? and could all of this be caused because my passenger side fan doesnt always start up and run properly??? suggestions wanted answers neeeded...ha well thanks and peace out

YES, the fan speed is critical in engine cooling. I would start checking the fan relays. Since the fan does turn on most likly a relay is bad and not the fan