I'm not sure if its just me or there is something up. the truck is a 90' extended cab, 2.9l, manual 5 speed, 4x4. It is just totally gutless once you get up to about 45-50mph, I cant get the thing to go and faster that 53 on flat ground, once it hits that the thing starts losing speed with foot to the floor. ive replaced fuel filter, pump, pressure regulator, oil change last week, did valve cover gaskets few days ago, new plugs and wires, and map sensor. truck runs great, wondering if anyone else has this problem.

Check that the throttle is openig all the way. Unless you already fixed it. I checked mine and it was barely opening past half way, the cable was stretched.

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1989 Ranger XLT 4x4, 2.9, auto, 4.10 LS, supercab, stock lift, stock 15"x 7"s, soon to have 31"x 10.50"s.

I figured it out, my timing was only advanced to 6 degrees