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Old 07-07-2011, 04:25 AM
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6.0L Injector Problems?

So I brought my truck into the Ford Dealer this week for a hard starting problem. The truck would crank like crazy and only start when feathering the throttle. We tested the FICM and it was good, so we decided to have the dealer look at it, suspecting it was oil rail plugs. The dealer replaced the o-rings on the high pressure oil pump, as well as the oil rail plugs. He also replaced a fuel injection solenoid. (Not sure if anybody knows what this is?)
The total cost for all this was around $1400. However when they went to test drive the truck (with the SCT tunes removed and the truck flashed to stock) the vehicle broke down and had to be towed back. The dealer told me this problem was caused by the failure of ONE injector, which shut down the whole system and caused the truck to not run. Now it is going to cost an extra $400 to have this problem fixed. Does this make sense that one injector can shut the whole system down? Or are they trying to cover something else they may have messed up? I have never heard of this so i thought i'd ask. Thanks
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Old 07-07-2011, 04:45 AM
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I wish you had more info like the test results of the HPO system. It sounds more like something from the causing the problem. NO, I don't believe that one injector will shut a truck down. That's like saying the one ouled sparkplug will keep a car from running

Ask them what the ICP is, and IPR duty while cranking (since it won't start now). Was the truck warmed up during the test drive? I'm guessing dummy plugs or STC fitting on the HPOP, but more info is needed to better diagnosis the issue
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Old 07-07-2011, 08:16 AM
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Yeah I'm not sure what the results of that were. But from what they told me there is a safety feature or something on these trucks that shuts the entire system down if one injector fails.
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Old 07-07-2011, 08:22 AM
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I've nerver heard of that. Not that it can't be true, but....
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Old 07-07-2011, 08:25 AM
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Yeah that's what I said. My brother has an 03 and we are pretty sure it has a bad injector because of how it runs, but it still runs.
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Old 07-07-2011, 08:33 AM
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Sounds like they might be jerking you around . Second opinions are nice too
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Old 07-07-2011, 10:59 AM
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Taking 1 cylinder out of a V8 will not cause it to stop running. Loosing HPO will cause it to stop running. Loosing a FICM will cause it to stop running.
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Old 07-07-2011, 01:15 PM
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Sounds like something was not diagnosed correctly. 6.0 is very expensive to guess and throw parts at.
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Old 07-11-2011, 07:34 AM
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Another observation - when they tested the FICM, was it via a volt meter or a monitor (like an Edge Insight for example), and, was it done when the vehicle was cold? I ask, b/c I have symptoms of a failing FICM. When the vehicle is warm it will read 48.5v consistently, however, when cold after start up, it will drop as low as 29.5v.
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Old 07-11-2011, 08:54 AM
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Quote:
Originally Posted by ohman_stm View Post
Another observation - when they tested the FICM, was it via a volt meter or a monitor (like an Edge Insight for example), and, was it done when the vehicle was cold? I ask, b/c I have symptoms of a failing FICM. When the vehicle is warm it will read 48.5v consistently, however, when cold after start up, it will drop as low as 29.5v.
Your FICM is toast
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