I have a 95 F150 V8, auto (as you can see I do not know a whole lot about cars, but enough

), and am having problems with the truck shifting from 2-3. It shifts from 1-2 fine, but sometimes it JERKS into 3rd and sometimes it shifts out of 2nd into nothing and you have to let off of the gas for it to shift into 3rd, yet other times it shifts from 2-3 easily,

. I looked in the Haynes manuel

, but found nothing. Any ideas

?