shaking ? 3:55 gears

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Jul 29, 2008 | 07:59 PM

alanoakley

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shaking ? 3:55 gears

I have had several F-350's over the years. Great truck. I have a new F-350 4x4 with 3:55 gears. Did my break in miles. Hooked to small load (6500 lbs.), started up a slight hill (pavement), first gear, truck started shaking. The more I depressed accelerator, the worse it got. Let off and eased up the hill.
Empty, no sytems. Only happens at at very low speed. Anyone else experienced this? First one with 3:55's!
Thanks!

Jul 29, 2008 | 08:43 PM

texastech_diesel

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From: Breckenridge, TX

New 350 4wd with 3.55 gears? Must have a 6.4 PSD in it, with an auto if I remember right. Yes?

Jul 29, 2008 | 08:58 PM

F350-6

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Welcome to FTE Alan. Just a few questions. What motor? What tranny? What RPM's did this occur at? and what type of trailer? Did you try pulling the same trailer with a different truck up the same slope to rule out any trailer issues? I've had some gooseneck loads that would act as you describe.

Jul 30, 2008 | 06:08 PM

alanoakley

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6.4 Psd

Quote:

Originally Posted by texastech_diesel

New 350 4wd with 3.55 gears? Must have a 6.4 PSD in it, with an auto if I remember right. Yes?

Yes sir. 6.4 PSD Automatic. Only happens in 1st gear.
Thanks! Don't know what to do?

Jul 30, 2008 | 06:32 PM

alanoakley

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6.4 Diesel with automatic. 1st trailer was 20' tandem with my Jeep & 4 wheeler in the bed of truck, total weight 6500 lbs. , second was a 32' gooseneck with pretty good load of windows, probably about 10,000 lbs. Thanks!