Newbie needing help with 6.0
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4th Gear
Joined: Apr 2024
Posts: 4
Likes: 1
Newbie needing help with 6.0
Hello, new to forum hoping someone can help. I have a 2003 6.0. About 7 years ago I installed a Pensacola Diesel HPOP along with OEM IPR and ICP. Truck has ran good and now I have a crank no start issue. Took the truck to a shop and they diagnosed a bad HPOP. I installed the Dieselsite Adrenaline slightly over stock HPOP. OEM discharge tube, OEM IPR, OEM ICP, Dieselsite EGR Cooler, XDP Oil Cooler, Updated Standpipes, HHC Fuel rail seals and the new HHC leak proof ball cups as well as OEM steel braided lines from the standpipes to the fuel rails. I also installed a new OEM fuel injection harness. Truck has a Sinister Diesel air intake upgraded alternators and 4 inch exhaust. Truck also has coolant filter system and updated FICM. I also installed the ICP relocation kit. With all that said, I still have crank no start. Using the scan gauge II, I get 47.5v and sync when cranking. The IPR is showing 84% and the ICP will only get to 260. When I unplug the ICP (ICP goes to 1500 and IPR to 45%) truck will not start either. I do have low pressure showing on the gauge and the oil filter housing fills with oil. I plugged air into the ICP port, and the only leak was one injector on the passenger side. I replaced that injector. I found a bad connection on the IPR pigtail fixed it and the truck started. Took the truck for a drive and the ICP was eratic bouncing from 650 to 1200 and the IPR stayed at 85%. Pulled into the driveway and truck died. Once again have a crank no start issue. Today I plugged the IPR into a 12v power supply and turned it on while cranking and the truck started right up. Removed the power supply and plugged IPR back in and get a crank no start. Then I grounded the ground side of the IPR and the truck starts. I know this is a pulsating ground and am not sure on how to check it. I did trace the ground wire back to the PCM and there is continuity from the PCM to the IPR. I replaced both relays associated to the PCM and checked all fuses. Also checked grounds in the engine compartment. I also went back though removed every crimp connector and soldered all of the connections and used heat shrink. At this point I do not know what else to check or if I just need to replace the PCM. Any advice will be appreciated.
Logistics Pro
Joined: Jan 2010
Posts: 4,100
Likes: 1,635
Okay so you know it's an issue at the IPR, and that it's not getting/seeing 12v (you saw this when you put in a 12v power supply). Possible bad IPR, possible bad wiring (chaffed wire someplace). Going to have to check both. I wouldn't have moved on to anything else until that issue was solved.
Tuned
Joined: Jan 2019
Posts: 329
Likes: 79
From: Southern California
Your getting help on your other post but your not responding to the comments or questions, probably not what you want to hear.
https://www.ford-trucks.com/forums/1...ith-6-0-a.html
https://www.ford-trucks.com/forums/1...ith-6-0-a.html
Logistics Pro
Joined: Jan 2010
Posts: 4,100
Likes: 1,635
Your getting help on your other post but your not responding to the comments or questions, probably not what you want to hear.
https://www.ford-trucks.com/forums/1...ith-6-0-a.html
https://www.ford-trucks.com/forums/1...ith-6-0-a.html
I have noticed it seems that he's just throwing parts at it and hoping something sticks, but he definitely needs to troubleshoot those ICP/IPR issues first and foremost.
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