HI..its a 99 b3000 2wd automatic..and for a while now there has been a noticable hesistation with slight power loss when driving at highways speeds on flat road also during heavier acceleration..i;ve searched the site but found nothing that could confirm what it is i;m dealing with..

The problem seems to be intermittent and it feels like a gust of wind hits the truck(slight power loss) then it just goes back into the power like normal..there is no change in rpms...or engine noise..no warning codes..it only happens for a 1/2 second and then its normal again..but will do it very often...i;ve had the truck scanned with no codes..replaced the plugs, wires, and fuel filter also the speed sensor a few months back..i don't know if this is a transmission problem or and engine problem...hey but any helps would be much appericated...thanks

 

Try cleaning the MAF sensor: https://www.ford-trucks.com/forums/1...-cleaning.html

 

There could be something telling it is under more load and it may be unlocking the TC. If you are not throwing any codes i would not worry too much. Another thing to consider the computer at times will play with the injectors from time to time.... I can't remember who had the wonderfull link about our trucks that explains how the pcm adjust fuel/trim tables during normal driving