humming sound after shut down - Ford Powerstroke Diesel Forum
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post #1 of 13 Old 09-24-2013, 09:00 AM Thread Starter
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humming sound after shut down

Im new to this site. never owned a diesel before dont know if it normal or not. just bought the truck on saturday. its a 2003 F250 with the 6.0. any help would be great. Thanks
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post #2 of 13 Old 09-24-2013, 09:05 AM
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Give us a little more info please. Where does the hum seem to come from, etc.

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post #3 of 13 Old 09-24-2013, 09:20 AM
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A Newbie-newbie-new

Hey Sargar - I'm also new to the forum- Thanks for makin newbies feel welcome.
I am also new to the diesel scene, however I have wanted one for a looong time. Finally have a good reason so I bought an 03 F350 (I love BIG POWERFUL stuff) and now I'v got a boatload of stuff to learn. A little nervin but a lot exciting too. So that's why I joined.
Hope this reply works-let me know.
Clueless at this point!
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post #4 of 13 Old 09-24-2013, 10:00 AM Thread Starter
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it sounds like its coming from the drivers side in the engine bay it last about 30 seconds.
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post #5 of 13 Old 09-24-2013, 10:03 AM
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Is it a constant hum that just stops or does it taper off as the thirty seconds passes

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post #6 of 13 Old 09-24-2013, 10:51 AM Thread Starter
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it just stops
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post #7 of 13 Old 09-24-2013, 01:22 PM
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Do you hear your injectors cycling during the glow plug cycle, especially on cold start? Does this hum sound anything like the injector cycling sound?

Im not real familiar with the older strategies, but there was at one point a PCM strategy that would cycle the injectors after the truck is turned off. I dont know how long it would do it for though. If this is what it turns out to be, you need to get the truck's PCM and FICM updated, because some of these older strategies are known as FICM killers, but you wouldnt know which strategies you have without plugging a diagnostic tool capable of pulling that kind of info.

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post #8 of 13 Old 09-24-2013, 04:57 PM
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I think the strategy idea may turn out to be correct, especially with it being an early truck. I'd have the hood up and have an assistant shut the engine down, then start listening and touching stuff to see if you can locate it. If you can't feel anything humming/buzzing, it may be the injectors.

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post #9 of 13 Old 09-25-2013, 04:49 AM Thread Starter
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I will check that out. Thanks for all the help.
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post #10 of 13 Old 09-25-2013, 07:11 AM
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if possible you could post a video via youtube or photobucket (as well as other options) to help the process.

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