unplugging the MAF apparently wont do crap to these trucks from what I can tell. I bought my 96 2.3 ranger from my dad after he put in a new engine.
I ran around for 8 months and barely could get up to 65mph in the stupid thing on the highway and the idle would hang high. finally got fed up and started looking around.
they never hooked the MAF back up after putting the damn engine in. Plugged it in and all was well.
the whole time I was driving it with the MAF unplugged, it never threw a single code. I have absolutely no idea why either as it was technically running in limp mode if it couldnt meter the air but whatever.
oh also, have you checked the timing?? as in pulled the timing cover off and actually checked the belt alignment?? the tensioner could have slipped and you might be a tooth off...
I'd pull the timing cover off and line up the pulleys and make sure they are all aligned and also while the cover is off, pop the distributor cap as well and make sure its lined up properly on a plug as well..