P0506 and P0357 code, need help - Page 2 - Ford F150 Forums - Ford F-Series Truck Community.


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Old 06-10-2011   #11
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Well both the codes came back today. When these codes are present the truck runs rough and has no power. ANY HELP on what to do next??
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Old 06-10-2011   #12
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Is it the same coil? There's always a chance you have another bad coil, but that's not very likely. Might want to test it.
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Old 06-10-2011   #13
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yes it is the same coil. How do you check a coil? should I move it to a different cylinder and see what happens? Thanks for all the help. This problem is kicking my butt.
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Old 06-10-2011   #14
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Ya, switch 2 coils around and see if the problem follows the coil. If not and is still on the same cylinder then start checking the wires.
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Old 06-10-2011   #15
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what are the chances of the motor being hurt in anyway ?
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Old 06-11-2011   #16
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Very small. Your just not firing right on that one cylinder. I wouldn't suggest driving for a long time like that, but in the short term, it's OK.
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Old 06-12-2011   #17
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I moved the coil from #7 to #3. I will see what happens. I did check all the wiring with my meter and visual. Did not find any shorts. I am starting to think that pcm is bad. If this is the problem will I need to do anything when I get a new one? Again thanks for all the help
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Old 06-12-2011   #18
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I'm not as familiar with Ford PCMs as I am with GM. With GM you need to do a CASE learn and a security relearn. I would assume there is something similar with Ford. I did a little looking and looks like the VIN will need to be programed, as well as any security keys. This would all need to be done at a dealership. I don't see the PCM as being the problem.
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Old 06-13-2011   #19
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the codes came back today after moving coils. It is the same codes. I checked the wiring yesterday by looking at it for breaks and bare spots. Did not find anything. What do you suggest to do next? Take it to a shop to have computer put on it
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Old 06-13-2011   #20
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Did you replace the spark plug?

At this point we know it's not the coil, you moved it and problem didn't follow it. If the spark plug is new, that should rule it out, but still check it, I've seen cracked plugs. You need to look at what is unique to that cylinder. I would be looking at the wires between the ignition control module and the coil. If that all looks good, perhaps the ICM is acting up.
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