i have a 2002 f150 4.6l, ive had the intake gaskets replaced, the clutch fan replaced, the thermostat replaced, and fluhed and brumped the sytem. its like it builds to much presure and then blows coolant from the cap. heres the wired parts, it does not do it all the time, just from time to time and for no known reason, but sometimes when driving, the guage goes all the way into the red, the temp and oil failure light comes on and I lose power, I pull to the side of the road, turn the truck off and back on and everything goes back to normal. At this point no one from ford or other places have been able to give me any type of idea.

 

Ok now I have changed out the hose's and the cap....still blowing water from the cap...but not as much.....need any advise and help

 

whats the verdict TIME any luck, ihave the same truck but diff. prob. keep us posted

 

still no complete answer, it seems to have went away on its own, or maybe I fixed the problem all together. Not sure but runs like my old truck always has. I hope you find the answer your looking for with yours