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'08 5.4 Cylinder 5 dies at idle

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Old 07-28-2016, 02:23 PM
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Default '08 5.4 Cylinder 5 dies at idle

08 5.4 3v in an F250 (Basic single-cab plain work model) at idle cylinder 5 drops out



But if you bump the RPMs up 1200 - 1500 it smooths out

New plugs, coil packs, injectors.
Read online that the drivers for the injectors in the PCM go bad, shipped it off to have it checked out and the company said everything looked good.

Please help, I'm stumped pretty bad.

Old 07-28-2016, 05:00 PM
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Have you checked the wiring harness to the COP and Injector? Look at the plug connections and the wiring harness, there may be a break or intermittent connection in the line.
Old 07-29-2016, 06:39 AM
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Agree.. Gotta be a wire



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