03-19-2008, 09:45 PM
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#1 (permalink)
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EcoModding Lurker
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1995 K1500
hey guys my pickup is acting up , for the past couple months when gas is applied, and only when gas is applied i have a loud humming noise that smoothes out the faster i go, but doesnt start until i hit 25 mph no matter what gear im in , as soon as i let of the gas it goes away, front cv shafts are good, u joints are good, rear pinion bearing has no play in it. Im stumped, help would be appreciatted
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03-19-2008, 09:52 PM
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#2 (permalink)
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Master EcoModder
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Driveshaft CV ball?
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03-19-2008, 10:25 PM
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#3 (permalink)
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EcoModding Lurker
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ball? what do you mean ?
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03-19-2008, 10:38 PM
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#4 (permalink)
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Depends on the Day
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Speculations... (since it isn't engine speed or specific-gear dependent)
In addition to Red's suggestion...
Tire wear
Driveshaft out-of-balance
How's the rear diff gear oil?
Have you tried the 4-wheel drive engage/disengage?
Any more info on the problem -- does it do it in neutral, things like that?
RH77
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03-19-2008, 10:49 PM
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#5 (permalink)
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EcoModding Lurker
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tires are nearly new 33 inch BFG all terrains, with no unusual tire wear , all the weights that were on the shaft are still on , rear diff oil is ful both front and rear, it not in the 4 wheel drive already tested that, somewhere in the tranny on back
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03-19-2008, 10:53 PM
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#6 (permalink)
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EcoModding Apprentice
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How many miles on your truck. Your fuel pump might be going bad.
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03-19-2008, 11:15 PM
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#7 (permalink)
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EcoModding Lurker
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its not the fuel pump, been checked, its in the driveline , 216,000 on the truck 55,000 on the tranny, tranny flushed 4000 ago, goes in for pitman arm , idler arm , and alignment tommorow
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03-19-2008, 11:17 PM
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#8 (permalink)
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EcoModding Apprentice
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exhaust leak?
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03-19-2008, 11:25 PM
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#9 (permalink)
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EcoModding Lurker
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lol no , its in the driveline i can feel the humm in my pedal
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03-19-2008, 11:47 PM
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#10 (permalink)
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EcoModding Apprentice
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Put an extra pair of socks on.
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