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P0278 Cylinder 6 Contribution/Balance Fault

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Old 08-30-2011, 07:36 PM
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P0278 Cylinder 6 Contribution/Balance Fault

P0278 Cylinder 6 Contribution/Balance Fault . What is this telling me bad injector,bad wiring, or is this a IDM problem.

I'm pretty sure i know the answer to this
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Old 08-30-2011, 08:44 PM
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Probably bad injector, but definately check the wiring first.

Does it have a noticable miss?
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Old 08-30-2011, 08:51 PM
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If the wring and the IDM are not suspect & a compression test is good ,I would then suspect the injector ..
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Old 08-30-2011, 09:34 PM
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I wouldn't say it's a miss but you can feel a rough spot in the idle about ever two seconds
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Old 08-30-2011, 09:38 PM
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I changed the UVCH and pig tails out to the SD style about 3 months ago I'll have to re check my connections.

I have a spare IDM that I'll try for shlits and giggles.
And I'll try my spare CPS just to see if for some reason it helps or moves to a different cylinder
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Old 08-30-2011, 09:41 PM
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I did notice this say I'm going 65 mph and give a little go pedal to pass it will act like it has no power till I really get on it. Im gonna pull the chip tomorrow and go from there
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Old 08-30-2011, 09:58 PM
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Ok i did another CCT and when it gets to that injector and shuts it down you can defiantly tell that the engine doesn't really change that much not like the rest of them.



Jim do you take blood as payments. LOL
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Old 08-30-2011, 10:01 PM
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If the engine doesn't change that much ,its not the injector ...
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Old 08-30-2011, 10:04 PM
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When it does the CCT does it do them 1-8
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Old 08-30-2011, 10:22 PM
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If not the injector then what am I looking at
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Old 08-31-2011, 09:01 AM
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Make sure the Wiring is intact, & Ohm the injector solenoid first ..
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Old 08-31-2011, 09:50 AM
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Will do. I did a buzz test and it passed I also did a WOT run and I normally hit 24 psi I'm down to 18-20psi
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Old 08-31-2011, 02:59 PM
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To the TOP for any more ideas
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Old 08-31-2011, 03:09 PM
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How many miles on your injectors?

Have you observed them while the engine is running ?
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Old 08-31-2011, 03:13 PM
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201,xxx not yet I want get to really rip it a part till this weekend just trying to get a list of things to check when I get off. I'm gonna pull the chip before I leave work
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