Sunday, February 4th, 2007 AT 3:46 PM
My 1997 ford f-150 115,225 6.2 l v6 my truck will run fine for awhile but the water gauge will spike to hot if I rev my engine it will go back down to normal and stay that way for awhile just lately it will blow hot air when running on the highway but when I slow down it gets cold in warmer weather it always blew hot now thats it colder it goes hot and cold

