All 8 injector circuits low
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Joined: Jul 2005
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From: Middle Tn.
All 8 injector circuits low
Hey guys,
Buddy was driving his 05 truck 6.0 engine this last weekend to a campground at the beach with his 9,000 lb. travel trailer in tow. Came to a hill and check engine light came on. Continued to the campground with no problems and the truck was running good. Next morning started truck and no light. Stayed there for a couple days and came home. Came to the back side of the same hill and check engine light came on again. Drove home with no problems and the truck was running fine. Truck sat overnight and the next day when he started the truck there was no cel. I scanned the codes today and there were 8 of them identifying all 8 cylinders injector ckt. low. After talking to him awhile I found out that the lube place that did his last oil change used a Penzoil oil filter #PZ-156 and that that filter uses an internal adapter to make it fit. I think that when he hit the hill with his travel trailer hooked up that he was probably starving the inj. oil firing ckts. Do I have concurrence on my diagnosis? Codes are; PO 279, 264, 267, 270, 273, 276, 261 and 282. Thanks in advance, Mike
Buddy was driving his 05 truck 6.0 engine this last weekend to a campground at the beach with his 9,000 lb. travel trailer in tow. Came to a hill and check engine light came on. Continued to the campground with no problems and the truck was running good. Next morning started truck and no light. Stayed there for a couple days and came home. Came to the back side of the same hill and check engine light came on again. Drove home with no problems and the truck was running fine. Truck sat overnight and the next day when he started the truck there was no cel. I scanned the codes today and there were 8 of them identifying all 8 cylinders injector ckt. low. After talking to him awhile I found out that the lube place that did his last oil change used a Penzoil oil filter #PZ-156 and that that filter uses an internal adapter to make it fit. I think that when he hit the hill with his travel trailer hooked up that he was probably starving the inj. oil firing ckts. Do I have concurrence on my diagnosis? Codes are; PO 279, 264, 267, 270, 273, 276, 261 and 282. Thanks in advance, Mike
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From: Middle Tn.
Sounds feasible, if low voltage, in my mind it should be there all or most of the time not just when you hit a hill with a load. That to me appears to be a fuel or oil pressure problem. maybe a tech will respond?
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Joined: Jul 2005
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I may be wrong, but if Pennzoil did the oil change and rube-goldberged the oil filter... I also suspect they did not use the right oil.
They have one oil that meets CI specs, the truck suv oil.. the rest of their stuff is gasser grade stuff.
Pennzoil - Not just oil, Pennzoil
They have one oil that meets CI specs, the truck suv oil.. the rest of their stuff is gasser grade stuff.
Pennzoil - Not just oil, Pennzoil
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Joined: Dec 2003
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From: Stuttgart, Ar
It's not oil--it's all electrical. I believe his FICM is dying. I would, however, change the oil filter ASAP and demand to know what oil they used. If you have low injector oil pressure it would read an ICP code not an injector electrial code. It would be very unusual or impossible to get 8 contribution/balance codes if there was a loss of power in all 8 cylinders due to the way the PCM perceives that condition.
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Post Fiend
Joined: Jul 2005
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It's not oil--it's all electrical. I believe his FICM is dying. I would, however, change the oil filter ASAP and demand to know what oil they used. If you have low injector oil pressure it would read an ICP code not an injector electrial code. It would be very unusual or impossible to get 8 contribution/balance codes if there was a loss of power in all 8 cylinders due to the way the PCM perceives that condition.
Highly improbable that all 8 injectors have failed at the same time. FICM failure is jumping to conclusions without checking electrical system first.
The next thing to check is bad alternator (voltage and current), battery, terminals, etc. to eliminate weak electrical input current going into FICM.
I suggested doing the oil first because it is not inconceivable that really screwed up oil / oil pressure can be read as an injector electrical failure.
Once the electrical system is known to be in top shape, then it is harnesses, FICM module voltage tests.
Junior User
Joined: Aug 2007
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What flash do you have??? As per TSB if all 8 cyl low circuit reprogram!!!!!!!! Seen this numerious times in the shop. Will usually fix the problem, If it is a Ficm you will usually get a ficm performance code and no light, can't remember the code off the top of my head. Are you getting hard start??? Oil if using aftermarket filters, and not the ford one (FL2016)it will cause issues(due to drain back valve) again seen it inthe shop many times from no starts, hard starts etc, injector issues. Hope this helps
Fleet Owner
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Edit ......
I didn't see the last line from gearloose1 - he already covered it!
Hotshot
Joined: Dec 2003
Posts: 15,369
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From: Stuttgart, Ar
Highly improbable that all 8 injectors have failed at the same time. FICM failure is jumping to conclusions without checking electrical system first.
The next thing to check is bad alternator (voltage and current), battery, terminals, etc. to eliminate weak electrical input current going into FICM.
I suggested doing the oil first because it is not inconceivable that really screwed up oil / oil pressure can be read as an injector electrical failure.
Once the electrical system is known to be in top shape, then it is harnesses, FICM module voltage tests.
The next thing to check is bad alternator (voltage and current), battery, terminals, etc. to eliminate weak electrical input current going into FICM.
I suggested doing the oil first because it is not inconceivable that really screwed up oil / oil pressure can be read as an injector electrical failure.
Once the electrical system is known to be in top shape, then it is harnesses, FICM module voltage tests.
Strokin71---Can you post the TSB about reprogramming for those codes? I haven't seen that one. Is it new possibly?
Maybe I've been doing this too long
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From: Middle Tn.
I never said or implied that all 8 injectors failed at the same time. All the codes are electrical failure codes for all 8 injectors which really only points to an ELECTRICAL failure of some kind. If it was oil pressure failure for all 8 injectors then it would show an ICP or IPR code. For "bad" oil and filter to almost immediately cause 8 injectors to fail would have to be really bad oil, like something that maybe they dished up out of the oil change pit. Doing FICM diagnostics should include battery/alternator/electrical system. That's the nature of the beast.
Maybe I've been doing this too long
Maybe I've been doing this too long
Elder User
Joined: Nov 2008
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From: in the fast lane
Mine did the same thing, got the same codes the truck still run o.k. at first then gradually started having hard starts. It was the FICM on mine going out. Replaced it about a 1 1/2 years ago fine since.