vg30 problems need some new ideas

[whatroad]

ok this is a 94 d21 pickup and i swaped a 1995 pathfinder vg30e in about 80 miles ago. b4 i took it out it ran and drove great. after swap it ran OK for that 80 miles lacking a little power but it was just a bad coil wire.

 

now engine runs clean at idle and through all rps with light throttle. with 1/3 throttle and up engine starts cutting out at 2800 rpm with no load.

 

no dtc

 

things i replaced

 

ign coil, ign resistor, ign transistor, plugs, wires, cap rotor, cps/distributor,

tps, mafs,

egr checked out fine

all vac lines are good

checked most of the wires continuity all grounds i found are good

all new fuel lines no kinks or loss of pressure, new filter. regulator seems to be working but i have not pressure tested it yet.

 

ecm is not in safe mode, i manually put it in safe mode and got a very different feeling of the engine cutting out.

 

i did not test the o2 yet or the knock sensor . you would think that would store a code in the memory.

 

spark plugs are burning clean. me and some others all can agree this is not internal

[Comrade_Charlie]

you've checked the fuel pressure? Crappy old fuel injectors will make a engine run like dirt. I got mine rebuilt and it was like a new engine. Just a though, I guess check the ohms on them if you haven't. Other than fuel pressure, and maybe cam timing? I have a ls400 right now that idles fine but doesn't have any power, someone told me its the timing but who knows.

 

Vg's can have some weird issues.