97 PSD lagging and humming grinding noise - Ford Powerstroke Diesel Forum
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post #1 of 11 Old 01-24-2013, 11:14 AM Thread Starter
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97 PSD lagging and humming grinding noise

I have a 1997 PSD all stock with 194,XXX. E40D no idea if it has ever been rebuilt or not.
since the cold has set in the truck has been running a bit rough. In all gears the truck will consistently make a humming/grinding noise and slow the truck down. it is only at a certain rpm in each gear. i can even hear it do it when idling. after the truck is warm it will still do it unless i shut it of and let it sit for maybe ten minutes and then drive again, and even then it still does it. i have to get on it for it to go away and it makes her real hard to drive. Any ideas? i will try to make a video of it tomorrow morning when i go to work, as it is sort of hard to explain. I am thinking it is the trans because it does shift a bit hard, but maybe the turbo. would EBVP have anything to do with it
??

Last edited by all_stroked_out; 01-24-2013 at 12:16 PM.
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post #2 of 11 Old 01-24-2013, 04:39 PM Thread Starter
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Any ideas? I have a video but I am unsure of how to upload it here
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post #3 of 11 Old 01-24-2013, 05:39 PM
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Does it sound like marbles in a coffee can? Cheers!

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post #4 of 11 Old 01-24-2013, 05:47 PM Thread Starter
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No more like sandpaper against metal!
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post #5 of 11 Old 01-24-2013, 06:00 PM
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Does it happen when coasting in neutral?
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post #6 of 11 Old 01-25-2013, 08:30 AM Thread Starter
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Quote:
Originally Posted by madpogue View Post
Does it happen when coasting in neutral?
No it does not, only around 1100 to 1500 rpm in any gear besides neutral. I am going to changes the trans filter and fluid and see if that helps at all. The fluid looks good and light red though...
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post #7 of 11 Old 01-25-2013, 08:42 AM
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Okay, just wanted to establish that it's not something further down in the driveline (diff, brakes, etc). Hmm, torque converter maybe?
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post #8 of 11 Old 01-25-2013, 08:53 AM Thread Starter
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7.3 Powerstroke issue - YouTube
Here is a link to it
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post #9 of 11 Old 01-26-2013, 02:07 PM Thread Starter
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bump bump bump
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post #10 of 11 Old 02-08-2013, 01:11 PM Thread Starter
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Recently, i removed the exhaust from the cat back and the sound is amplified by 10 fold. I am leaning towards a torque converter, but i am unsure as to why the noise would get WAY louder? ANY suggestions would be awesome. Also i can post another video when i get home without the exhaust on if needed...
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