Just replace my fan clutch on my 04 1500 because it had locked up. got the new "aftermarket" one in fine but did notice that it was a little bigger but fit. The problem is that when i first crank up it will be locked up untill i get to about 45mph or break 3000 rpm. after that it runs fine and normal, but it i shut it off for 3 seconds it will do the same thing. I dont get it... Im going to go talk to the people at advanced auto to see what they say. I guess I need to hury up with this fix, cant do the 10mpg all the time. Anyone herd of problems like this?