Vibration upon holeshot while turning?
Thread Starter
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Senior User
Joined: Dec 2001
Posts: 340
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From: Central OH
Vibration upon holeshot while turning?
Hey all,
Fairly new to the newer SDs, coming off a 99. I now have an 08 F250, 4X4, which I am loving more each day.
When sitting at an intersection, and turning either direction from a dead stop, I get a slight vibration when taking off. If I straighten it up, it goes away immediately. It does stay when the tranny shifts.
Thinking U joint or pumpkin. Wouldnt a U joint vibrate on straightaways too? It almost feels like the rear end is vibrating, and I am guessing if something was hanging up on turns, it could shake like this since the wheels are wanting to turn different amounts?
Any help appreciated.....
Dig
Fairly new to the newer SDs, coming off a 99. I now have an 08 F250, 4X4, which I am loving more each day.
When sitting at an intersection, and turning either direction from a dead stop, I get a slight vibration when taking off. If I straighten it up, it goes away immediately. It does stay when the tranny shifts.
Thinking U joint or pumpkin. Wouldnt a U joint vibrate on straightaways too? It almost feels like the rear end is vibrating, and I am guessing if something was hanging up on turns, it could shake like this since the wheels are wanting to turn different amounts?
Any help appreciated.....
Dig
Hotshot
Joined: Mar 2007
Posts: 10,101
Likes: 40
From: Pa
If you have a limited slip differential in your truck I agree you could be experiencing some shudder. I get a little shudder in my LS diff however I am running very little friction modifier. You can try putting in 4 oz. or so of LS diff friction modifier and see if it goes away if it bothers you.
Thread Starter
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Senior User
Joined: Dec 2001
Posts: 340
Likes: 0
From: Central OH
Cool. I thought it would be the limited slip, just have never felt one shudder like that, and didnt know it was a normal thing. What is a LS modifier? Thought about changing to synthetic, but with the snow here in Ohio, dont want to make it too slippery.
Hotshot
Joined: Mar 2007
Posts: 10,101
Likes: 40
From: Pa
The 75w-140 gear oil is synthetic, I never saw 75w-140 that wasn't synthetic. If you bought your 08' used it is possible the previous owner changed the oil in the rear diff and didn't add any or enough modifier.
AMSOIL - Slip Lock™ Differential Additive (ADA)
