02 7.3 engine issue, electrical, or what?

[cengle1243]

02 f250 7.3L 195,000k (only upgrades are edge juice w/att., mbrp exh, brute force intake, and branks transcommand, which were on it when i bought it.)

driving down the road around 65 mph the other night i let off pedal to let someone over and the truck start bucking hard and acting like it wanted to die, I got back on the pedal and back to normal. did the same thing an hour later even when i let off the pedal and got back on it, so I got on it hard and it cleared up. seemed to lope at idle pretty bad at first start of the day also.

changed icp sensor, fuel drain valve a month or so ago, and after that happened on the road the other night I went ahead and changed the cps thinking it could be the culprit. the new one is the gray borg warner.
cleaned all elec. connections, ohmed out wiring to icp, cps, ipr,and everything else I could figure just to make sure it wasn't a wire problem.

the lope idle at first start seemed to level out after new cps, but the idle starts low at about 500 rpm and slowly climbs to around 650-680. tried unplugging icp sensor out of curiosity and truck will not start with it unplugged.

it seems to mainly to do the cutting out at around 2000-2250 rpms, whether its accelerating, decel, or holding steady, and whether it's in o/d or not. no smoke or anything when it happens.

i know it's a long post but just wanted to put everything out there, thanks for any help.