94 f150 5.0 160000 miles loss of power intermitinly
truck starts fine, idles fine, after eng. warms up and about 20 miles ck eng comes on for about 15, 18 seconds and goes off and that is when the truck is losing power,(about 50%) it does not miss, and it will do it on ether fuel tank and it does not die out, after about 35 to 40 seconds it is like you flip a switch and it runs great again, it will keep doing that the whole time you drive it about 8 to 10 min. apart. would love any info you could share on this if possible