You might. I know when I get my quad muddy I like to clean it good and put a shop light behind the rad and look through the rad from the front to make sure I have all the mud out. You would be surprised what you have missed when you think you have it all.
You will also want to check and make sure your fan is coming on to.
2013 Jeep Wrangler Sahara - White with Black Hard Top - Auto Trans, LSD with 373's, Remote Start, Mopar Hood Lock with Grill Guard, GraBars, VDP Stubby Front Bumper, Daystar Leveling Kit and Griffin Steering Attenuator.