Loud whine under load - Ford Powerstroke Diesel Forum
 
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post #1 of 4 Old 08-08-2011, 11:21 AM Thread Starter
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Loud whine under load

I have this problem I haven't been able to solve. Under load around 2000+ rpms, I will get a loud whine until I let off the throttle. I have replaced the serpentine belt thinking the belt was slipping, but this is loud enough that I can feel the loudness of the while in the floor board when it happens. It's to the point where towing my boat up the slightest incline will cause this noise. I don't have a boost gauge but I can say it happens with either close to full throttle or at least high load/boost as I mentioned.

Here is a video of the sound from inside the cab. I have a manual transmission. I figured maybe the clutch was slipping, but I have never heard a slipping clutch make such noise. That and the clutch isn't all that old either. Maybe 70 - 80k.


Tristan

1999 F-250 SD
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post #2 of 4 Old 08-09-2011, 03:30 PM
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sounds to me like a cracked exhaust manifold. Everytime yous tart building boost its whistlin out. Anyway had a Freightliner that would do the same thing on boost , sounds identical, good luck !

Sold 01 350 6" on 37's and mild mods, 00 X 4" on 35's, 02 f350 4" 35's modded from fan to drive shaft, ridin the 03 with nose conversion with 125k and counting upwards slowly.
Never had CNC's poo on any of it, never will.
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post #3 of 4 Old 08-10-2011, 07:17 AM Thread Starter
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Oh yay. Well that's something I will check for sure then. Thanks.

Tristan

1999 F-250 SD
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post #4 of 4 Old 10-12-2011, 05:18 AM Thread Starter
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Turns out it was a clamp to the intake manifold that was just hanging there. Can't believe they have worm clamps on this thing.

Tristan

1999 F-250 SD
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