i have a 95 f150 5.0 4x4 ive been troubleshooting this idle problem for a while now and its really stressing me out.When i start the truck on a cold day itll rev high for about 30 seconds then it imidiatelly drops down to almost stalling and the check engine light comes on .Ive changed the iac valve and the throttle position sensor but still doing the same thing does anyone have any suggestions? collant temp sensor? fuel pressure regulator ? or do i need to reset the computer which i dont know where the fuse is.