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Old 10-28-2008, 10:03 AM
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6.0 no go

Ok, i have an 03 6.0 with 160k. It has been startin very poorly in the mornings and running rough with no power when cold. I wrote a bunch of codes dow, cleard it out and drove it again to se what came back. This morning, 50 degres out it would not start, it cranked and cranked tryed a few times, then would start for a few seconds and die. the go pedal had no efect.
once it finaly started it was running very rough, I put it in gear and it would not move. I wiggled the wiring in the icm and it seemd to pick up a cylinder, but i think it was just starting to warm up. At this point it had p0480 coad for low signal at the cooling fan, no others. I checked all the turbo boots, and boosed when it would start to spool up would only climb to about 6 or 7 psi. But it would not pull over 2k rpm yet. once ti warmed more it would spool up better but then started blowing whits smoke. unburnt fuel not coolant, If I throttled it up a few times the nighbor hood looked like it was foggy. Still no other codes. Then I drove it some more it started gaining back most of its powe but sould still miss and surge. then it pulled a few injector codes for low sig in #4,6,7, the oher day it was just #6. I drove some nmore and it added # 1,5,8 to the list. These were the same ones it had in memory befor i cleared it. Could 6 injectors go bad together. I have not seen any codes for # 2 0r 3. The truck has a fresh oil change( no help) no fuel in oil, a new EGR from the last troubles last month, and no oil or cooant leaks.
What do you guys think
ICM
Hpop
or did 6 injectors go bad

If you let the truck sit 20 min. of so it cranks a lot to start, if you wait 2 hours form when it is warmed up, it starts the whole no power, wont move thig again untill it is up to opperating temp. and even then it is not right.
Thanks for your help
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  #2  
Old 10-28-2008, 02:37 PM
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Quote:
Originally Posted by skchevota View Post
Ok, i have an 03 6.0 with 160k. It has been startin very poorly in the mornings and running rough with no power when cold. I wrote a bunch of codes dow, cleard it out and drove it again to se what came back. This morning, 50 degres out it would not start, it cranked and cranked tryed a few times, then would start for a few seconds and die. the go pedal had no efect.
once it finaly started it was running very rough, I put it in gear and it would not move. I wiggled the wiring in the icm and it seemd to pick up a cylinder, but i think it was just starting to warm up. At this point it had p0480 coad for low signal at the cooling fan, no others. I checked all the turbo boots, and boosed when it would start to spool up would only climb to about 6 or 7 psi. But it would not pull over 2k rpm yet. once ti warmed more it would spool up better but then started blowing whits smoke. unburnt fuel not coolant, If I throttled it up a few times the nighbor hood looked like it was foggy. Still no other codes. Then I drove it some more it started gaining back most of its powe but sould still miss and surge. then it pulled a few injector codes for low sig in #4,6,7, the oher day it was just #6. I drove some nmore and it added # 1,5,8 to the list. These were the same ones it had in memory befor i cleared it. Could 6 injectors go bad together. I have not seen any codes for # 2 0r 3. The truck has a fresh oil change( no help) no fuel in oil, a new EGR from the last troubles last month, and no oil or cooant leaks.
What do you guys think
ICM
Hpop
or did 6 injectors go bad

If you let the truck sit 20 min. of so it cranks a lot to start, if you wait 2 hours form when it is warmed up, it starts the whole no power, wont move thig again untill it is up to opperating temp. and even then it is not right.
Thanks for your help
Check the IPR first. (Injector Pressure Regulator)
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