Ok motor has 170,000 on it with rebuilt injectors new orings. not any more blow by than a motor with that many miles should have. fresh oil change. Drove the truck the motor came from but never far to let it get up to temp as I was just parting it out. but it ran good. rebuilt the injectors while it was out all of them were in good shape. and it runs good down the highway an getting on it but at idle its running rough. so I swap the IPR with another 1 and still does the same thing.
codes it pulled are
P0236 Turbo Boost Sensor A Circuit Performance
P0472 Exhaust Back Pressure Sensor Circuit Low Input
P1280 ICP Circuit Out of Range Low
But I had the ICP unplugged in the vid with the check eng lite was on
the other 1 it was pluged back up but I cant remember if I cleared codes

down loading video now

 

http://vid259.photobucket.com/albums...n/IMG_1623.mp4

http://vid259.photobucket.com/albums...n/IMG_1622.mp4

1 is with the IPS unplugged where the check eng light is on. other is plugged back in

Only thing I haven't changed is the HPOP IDM an computer

 

My truck idles like that, and my last truck idled like that. I drove myself nuts on that one trying to figure it out. Ran fine, but idled just like that. Never did figure out why.

 

Mine idles funny to kind of surges alittle but seems to clear up when icp is unplugged

 

That may be a bad ICP sensor.

 

Yeah I know it's bad but it stil slightly does it when unplugged I guess I'll replace tomorow

 

yea bill I changed that also. Still the same thing. hate to put anymore money into it since I'm just trying to sale it. Its got me stumped for sure. Someone out your way needs a rust free truck don't they
lol

 

Yeah.......me! LOL!!

 

Boy this all sounds familiar. Maybe I'll just leave mine alone too, lol. That sounds about exactly like mine does now. Mine idles smooth as glass with the old worn out injectors in it, but now that I have some in it that are in better shape it idles rough when warm. Still runs great and pulls hard, but idles rough.

 

I thought mine always idled rough. But I'm starting to believe it that is just the way these trucks run when they get some miles on them. I could be wrong, but the consensus is telling me that I may be right.