Car is in Florida when running above 70mph on the highway the car runs about 3/4 of the way up the gauge,turn a/c off the engine temp will come down if you if you slow down to 60mph. the fan switch is new the fans are on with the a/c. Any help would be appericated!

 

check for a leak on your radiator.....oem radiator usually goes at around 100-150k miles...