hey names matt im new here and i also have the same problem with my 99 gtp but my fans do not come on at all . when i got the car a few days ago the pre owner had wired the fans to a toggle under the hood .I removed all the crap he put in and re wired the fans back to the factory plug changed the 3 relays under the hood and the 40amp fuse as well also the coolant temp sens ...... im at a loss here can anybody help thanks for youre time