2,4,6,8 injectors all bad at same time? - Ford Powerstroke Diesel Forum
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Old 06-12-2012, 04:00 PM
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2,4,6,8 injectors all bad at same time?

ficm tested fine with no errors according to the shop, yet they say they have codes on 2,4,6,8 injectors. could this be just a coincidence or is there really a problem with the ficm?

i plan on picking it up tomorrow and running some rev-x before doing an oil change then see where im at.

anyone have an idea off the top of their head?

Last edited by Wtp3; 06-12-2012 at 04:03 PM.
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Old 06-12-2012, 05:17 PM
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Check the FICM plug for that harness is plugged in properly and latched in place.also check the pins in the plug.
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Old 06-12-2012, 05:40 PM
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just inspect the pins for damage? should i try to ohm the wires to check for a break in a wire at all?

Thanks for the info
-Thomas
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Old 06-12-2012, 08:02 PM
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well yes you can. sorry the most common failure I find when it is a whole bank is the plug is loose at the FICM. There are a couple of other things that could kill a whole bank, but they are rather rare.
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Old 06-13-2012, 06:15 AM
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ok so i have checked the harness and it was plugged fully in and in good shape.

the truck has the following codes.

P0284:cylinder 8 contribution/balance
P0266: cylinder 2 contribution/balance
P0470: exhaust back pressure sensor malfunction

The shop also says that 4,6 are misfiring as well but not as badly as 2,8.

the truck was recently reflashed by this shop and has had ten drive cylces and these are the codes that repopulated.

kinda lost for ideas at the moment.
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Old 06-13-2012, 06:28 AM
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Those aren't FICM codes, so I wouldn't expect that to be your issue. In addition, the FICM connectors aren't all even or odd. Connector 1 (front) is 1,4,6,7 and Connector 2 (mddle) is 2,3,5,8, while Connector 3 (back) is for communication with the PCM.

I would suspect either injector problem or something in common with that bank of injectors, like a stand-pipe... What is the shop suggesting is the issue?
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Old 06-13-2012, 06:29 AM
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this is an 04' 6.0l btw.
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Old 06-13-2012, 06:31 AM
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I would ohm test the open and closed coils on the suspected injectors. Pins 1-2 and 3-4.

Sent from my SCH-I500
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Old 06-13-2012, 06:32 AM
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thier guy that specializes in 6.0's moved to another shop and want me to take it to him, which is what i plan to do.

however they also suggested that the oil was possibly aerating and that i do an oil change to eliminate that before taking it to the next guy.
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Old 06-13-2012, 06:33 AM
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Quote:
Originally Posted by Wtp3 View Post
thier guy that specializes in 6.0's moved to another shop and want me to take it to him, which is what i plan to do.

however they also suggested that the oil was possibly aerating and that i do an oil change to eliminate that before taking it to the next guy.
Sounds like they are guessing. I would get it out of there ASAP. You don't want them touching it...
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