took valve cover off to see if rocker arms were wore, took rocker shaft off, they looked fine, took off valve springs, valves sliding smoothly in guides, did leak down, and its perfect, heard rocker arm shaft was common problem, but these look great

 

I had a similar problem, all of the tests on the wiring harness showed it was good from the PCM to the injectors..... I moved the wiring harness around and noticed it ran worse.... not enough room between the transmission and the rad to check that part of the harness so I ran a new driver wire to the fuel injector harness and it solved my problem... can't hurt to run a temp wire to see if that solves your problem... a cheap test anyways

 

I wanted to thank everyone who give some input for my problem, The guy I was helping said he didn't want to invest anymore time on trying to figure out the problem, needed his van back and since it only missed on idle below1100 rpm he would wait till a later time to figure out what he was going to do. Thanks, again