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Noise when taking off?

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Old Jan 1, 2015 | 08:52 PM
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Noise when taking off?

I hear a trampoline spring type noise when I apply light pressure when taking off slowly. It sounds really weird, I have no idea what it is. Like if you were bouncing on a trampoline and the noises the springs make that's what it sounds like. 93 f150 4.9 4x2
 
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Old Jan 1, 2015 | 10:31 PM
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From: Deepwater Mo.
Where is the sound coming from?
 
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Old Jan 2, 2015 | 01:56 PM
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Originally Posted by Toplait
Where is the sound coming from?
Sounds like it's under the dash or something near my feet.
 
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Old Jan 2, 2015 | 02:15 PM
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Automatic or manual transmission?
 
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Old Jan 2, 2015 | 07:00 PM
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Originally Posted by madpogue
Automatic or manual transmission?
E40D automatic transmission.
 
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Old Jan 3, 2015 | 05:33 PM
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I would look at drivetrain parts (I.e. wheel bearing, u-joints, breaks, ball joints). Do these truck use a speedo cable? Could make noise inside the protective sleeve
 
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Old Jan 3, 2015 | 07:54 PM
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U-joints can start making a noise like that when they start going bad. It will progressively get worse if that's what it is. See if they have any play in them and if they have a zerk fitting shoot some grease in them and see if it helps.
 
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Old Jan 3, 2015 | 08:06 PM
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I've got a bad motor mount and an iffy trans. mount on my truck (1990 f150 4.9 5 speed) and it makes a noise similar to what you're describing. You might want to check that as well
 
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Old Jan 4, 2015 | 01:17 PM
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Originally Posted by jaagen
Do these truck use a speedo cable? Could make noise inside the protective sleeve
Nope. Changed over to electronic speedo in '92.
 
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Old Jan 4, 2015 | 02:16 PM
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Check for any loose shields on the exhaust system. They will vibrate at different frequencies as engine RPM changes and can make some STRANGE noises.
 
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Old Jan 4, 2015 | 02:36 PM
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Originally Posted by eakermeld
Check for any loose shields on the exhaust system. They will vibrate at different frequencies as engine RPM changes and can make some STRANGE noises.
Yes that too I forgot about hat because all of mine have fallen off or been taken off by now
 
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