I believe but I'm not sure that our fans have a low and high speed to them.I got the same problem with my 3.9 engine, with an impressive 108 celcius (about 226 fahrenheit) before the fans start, which seems very high to me. On some cars (Volkswagen I think), one of the two fans start at 200 and if the engine reach 220 the other fan engage. Is that how it is supposed to works too on the 3.9 engine ?
220 isn't real high, I've heard some engines are designed to run hotter to help burn cleaner (emissions) But it's higher than I'd like.
If you haven't changed the coolant lately try that and I'd add a bottle of "Water Wetter" I think it made a difference in my 3.5